Transactions of the Japan Society of Mechanical Engineers Series B

Online ISSN : 1884-8346
Print ISSN : 0387-5016

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Volume 51, Issue 468

Displaying 1-38 of 38 articles from this issue

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Oscillatory Phenomena of an Attached Jet

Toshihiko SHAKOUCHI, Sadao KUZUHARA, Junji YAMAGUCHI

1985 Volume 51 Issue 468 Pages 2489-2498
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2489

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Effect of the Secondary Flow on Karman Vortex Shedding Frequeney from a Yawed Cyliuder

Masataka SHIRAKASHI, Atsushi HASEGAWA, Shoichi WAKIYA

1985 Volume 51 Issue 468 Pages 2499-2504
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2499

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Discrete Frequency Noise Generated From a Flat Plate in Parallel with a Uniform Oncoming Flow

Tohru FUKANO, A.A. TALKUDER, Tadashi KOZU, Yasuo TAKAMATSU

1985 Volume 51 Issue 468 Pages 2505-2514
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2505

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A Study on Internal Flow of Scoop Tube Chamber in Variable-Filling Fluid Coupling

Kyoichi UCHIYAMA, Hideto TAKAYA

1985 Volume 51 Issue 468 Pages 2515-2522
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2515

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Flow Around a valve Plate Installed in a Duct and Its Fluid Force : 1st Report, In Case of the Valve Plate Installed at the Duct End

Junichi KUROKAWA, Toshiyuki UCHIDA, Takashi KUSA

1985 Volume 51 Issue 468 Pages 2523-2529
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2523

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Flow Around a Valve Plate Installed in a Duct and Its Fluid Force : 2nd Report, In Case of the Valve Plate Installed in the Middle of the Duct

Jun-ichi KUROKAWA, Toshiyuki UCHIDA, Takashi KUSA

1985 Volume 51 Issue 468 Pages 2530-2535
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2530

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Numerical Analysis of Gas Flow Inside a Rapidly Rotating Cylinder

Tatsuo ARAKI

1985 Volume 51 Issue 468 Pages 2536-2544
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2536

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Experimental Study on Tip Leakage Flow in Axial Flow Rotating Blades

Masahiro INOUE, Motoo KUROUMARU, Minoru FUKUHARA, Yasuhiro KAWASHIMA, ...

1985 Volume 51 Issue 468 Pages 2545-2553
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2545

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A Study on the Diffusion of Matter from a Continuous Point Source in the Uniform Mean Shear Flows : 1st Report, Characteristics of the Mean Concentration Field

Ikuo NAKAMURA, Yasuhiko SAKAI, Masafumi MIYATA, Hiroyuki TSUNODA

1985 Volume 51 Issue 468 Pages 2554-2562
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2554

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Coherent Structures in a Fully Developed Turbulent Pipe Flow

Nozomi TANIFUJI, Makoto ICHIJO, Sei-ichi IIDA, Yasujiro KOBASHI

1985 Volume 51 Issue 468 Pages 2563-2570
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2563

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Acoustic Characteristic of Two Circular Cylinders Forming a Cross in Uniform Flow : 1st Report, Effect of noise reduction

Yukio TOMITA, Susumu INAGAKI, Shoji SUZUKI, Toshio YOKOYAMA

1985 Volume 51 Issue 468 Pages 2571-2580
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2571

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Falling Water Films on a Vertical Cylinder with a Downward Step

Hideomi FUJITA, Kenji KATOH, Heishichiro TAKAHAMA

1985 Volume 51 Issue 468 Pages 2581-2590
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2581

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Condensation of SF₆ in supersonic nozzles : 2nd Report, effects due to the divergent angle of nozzle

Kouju SHIOZAKI, Masaaki KAWAHASHI, Makoto SUZUKI

1985 Volume 51 Issue 468 Pages 2591-2596
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2591

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Direct Measurements of Wall Shear Stress in Swirling Flow through Pipe

Osami KITO, Hideaki FUJIWARA, Koichi NAKABAYASHI

1985 Volume 51 Issue 468 Pages 2597-2605
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2597

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Condensation Heat Transfer on Various Dropwise-Filmwise Coexisting Surface

Akiyoshi YAMAUCHI, Satoshi KUMAGAI, Toshiro TAKEYAMA

1985 Volume 51 Issue 468 Pages 2606-2613
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2606

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Thermal Interaction of Volatile Liquid Droplet Impinging onto a Hot Liquid Surface

Masahiro SHOJI, Niro TAKAGI

1985 Volume 51 Issue 468 Pages 2614-2620
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2614

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Experimental Investigaiton of Natural Convective Heat Transfer in an Open Thermosyphon

Hideaki IMURA, Hiroaki KOZAI

1985 Volume 51 Issue 468 Pages 2621-2628
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2621

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Measurement of Total Hemispherical Emissivities of Wires by Using a Transient Calorimetric Technique

Hidetoshi MASUDA, Mitsuo HIGANO

1985 Volume 51 Issue 468 Pages 2629-2637
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2629

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Measurement of Surface and Interfacial Tensions of Iiquids in Contact with Other Vapor or Iiquid by a Pendant Drop Method

Masanori MURASE, Hidetsugu MATSUBARA, Yasuhiko MORI, Akira NAGASHIMA

1985 Volume 51 Issue 468 Pages 2638-2646
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2638

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Heat Transfer Process in Direct Contact Evaporator : 1stReport, Reasurement of Droplet Formation and Boiling Process

Yasunobu FUJITA, Kaneyasu NISHIKAWA, Kunio HIRAHAYA

1985 Volume 51 Issue 468 Pages 2647-2655
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2647

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Thermocouple Technique for Measurement of Fluctuating Temperafures in Flawes

Yukio MIZUTANI, Yasushi MATSUMOTO, Masashi KATSUKI

1985 Volume 51 Issue 468 Pages 2656-2663
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2656

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Prediction and Suppression of Coal Particle Dispersion : 1st Report, Critical Friction Velocity and Dispersion Quantity

Hiromi GO, Toshio SHINOHARA, Yoichi NAKAMURA, Keiji HORIUCHI

1985 Volume 51 Issue 468 Pages 2664-2671
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2664

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Capacity Self Controllable Rotary Type Compressors for Automotive Air Conditioners : 1st Report, Basic Design Theory

Teruo MARUYAMA, Shinya YAMAUCHI, Nobuo KAGOROKU

1985 Volume 51 Issue 468 Pages 2672-2679
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2672

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The Application of Advanced Aerodynamics to steam Turbine Reaction Blading

Yoshiki KADOYA, Yasuo KURAMOTO, Tomohiko SATO, Masanobu HONJO, Hisakun ...

1985 Volume 51 Issue 468 Pages 2680-2687
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2680

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Application of LQ Control Theory to Internal Combustion Engines : 1st Report, Basic Investigations

Shigeyuki MORITA, Hideaki KATASHIBA

1985 Volume 51 Issue 468 Pages 2688-2694
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2688

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Numerical Simulation of Flows in an Engine Cylinder : 2nd Report, Flow in a Deep-Bowl Combustion Chamber

Makoto IKEGAMI, Kyohei HORIBE, Gen'ichi KOMATSU

1985 Volume 51 Issue 468 Pages 2695-2702
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2695

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Bubble Rise Velocity and Void Fraction of Two-Phase Flow in Vertical Eccentric Annuli

Shinichi SARUWATARI, Yoshifusa SATO

1985 Volume 51 Issue 468 Pages 2703-2706
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2703

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Cavitation in Flows Past Circular Cylinders with Splitter Plates

Keiichi SATO

1985 Volume 51 Issue 468 Pages 2707-2713
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2707

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Cavitation which occurs in the wake of circular cylinder with splitter plate is investigated experimentally, especially in respect of the inception. The incipient cavitation number as well as the appearance of cavitation bubbles depends on Reynolds number and the length of splitter plate. The characteristics of the change largely when Reynolds number exceeds the critical value. The occurence and development of cavitation are controlled by the splitter plate and the extent of the effect depends on Reynolds number and air content. Especially, the larger effect is obtained at smaller Reynolds number. The scaling of Critical cavitation number in respect of the inception can be obtained by choosing the base pressure and the velocity of free streamline as the representative values.

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Study on Control of Radial Attaching Jet Flow : 1st Report, Effects of Control Flow on Main Jet Flow Near a Nozzle

Toshio TANAKA, Eiichi TANAKA, Katsumi NAGAI

1985 Volume 51 Issue 468 Pages 2714-2719
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2714

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An experimental study has been made of the reattachment of a radial turbulent jet flow discharged from a cylindrical nozzle on an adjacent offset disc plate. The effects of step height (distance of nozzle center plane from the offset plate), and control flow rate (ratio of control flow to main jet flow, suction and blowing)on flow pattern near the nozzle outlet section were investigated. Mean velocity and turbulent velocity distributions were measured with the aid of Hot-wire anemometer. The velocity profile, shape and length of a jet potential core, and a deflection of jet center axis depend on the combination of the step height and control flow rate. An oil film flow visualizing technique was also applied to determination of the flow pattern.

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Separated Flows in Three-Dimensional Ducts with Wavy Surfaces

Akira NAKAYAMA, Hitoshi KOYAMA

1985 Volume 51 Issue 468 Pages 2720-2727
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2720

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A numerical calculation scheme developed for arbitrary velocity and coordinate systems has been successfully employed for the calculation of flows over wavy wall surfaces. A comparison of the prediction and experiment reveals that the present numerical method, when coupled to the two-equation turbulence model, provides a reasonable prediction on the mean velocity and pressure fields, althogh some discrepancy is present in the wall shear stress distributions as a result of the standard near-wall treatment on the wavy walls. Calculation results on a square duct with upper and lower wavy wall surfaces show that the secondary flow activity works not only to enhance the heat transfer rate, but also to shorten the running length for the development of the periodic pattern in the temperature field.

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Air-Water Two-Phase Annular Flow in a Horizontal Tube and Near Horizontal Tubes : Hold-up, Frictional Pressure Drop and Circumferential Distribution of Film Thickness

Akiharu OUSAKA, Tohru FUKANO, Takao MORIMOTO

1985 Volume 51 Issue 468 Pages 2728-2736
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2728

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An experimental investigaiton into an air-water two-phase annular flow in a horizontal tube and near horizontal tubes was carried out. The inclination angles of the tube to horizontal were -10^°, 0^°, 10^° and 15^°, where minus means the downward flow. Tube diameter was 26.0 mm. Volumetric fluxes of air and water ranged from 10 m/s to 50 m/s and from 0.002 m/s to 0.4 m/s, respectively. Hold-up, frictional pressure drop and the circumferential position from which liquid film starts to form were measured and the effect of the tube inclination on these parameters were examined. As the results, it was made clear that the effects of tube inclination could not be neglected even in the case of slight inclination and that the mean film thickness averaged over the circumference of the tube was approximately equal to the local mean film thickness at θ= 120^° independent of the inclination.

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Thermodynamical Discussions for the Basic Equations of Conducting Magnetic Fluids : Nonrelativistic and Nonpolar Theory

Kazuyuki SHIZAWA, Takahiko TANAHASHI

1985 Volume 51 Issue 468 Pages 2737-2745
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2737

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The governing equations for magnetic fluids with good conductivity of heat and electricity have not been sufficiently discussed thermodynamically. In this paper a new strict simplified method of deriving the basic equations for such condcuting magnetic fluids is presented by the themodynamical method using free energy and dissipation functin on the assumptions of the nonrelativistic and nonpolar theory. As results the physically desirable expression of the pressure part and Maxwellian stress in the constitutibe equation of stress is derived in a general theory that polarized and magnetized media are exist. Then the following results are obtained from thes theory : The surface forces acting on the material control surface include not only stress but also electromagnetic momentum flux density. And pointing vectors in the material volume are observed in the relativistic electromagnetic fields which moves against the fixed system.

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Sudies on Wells Turbine for Wave Power Generator : 4th Report, Starting and Running Characteristics in Periodically Oscillating Flow

Masahiro INOUE, Kenji KANEKO, Toshiaki SETOGUCHI, Katsumi SHIMAMOTO

1985 Volume 51 Issue 468 Pages 2746-2752
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2746

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In order to clarify the starting and runnning characteristics of Wells turbine in oscillating flow, an experimental investigation has been made by a newly deviced turbine equipment in which the oscillating flow condition is simulated. The results have been compared with the analytical results. In the analysis, both starting and running characteristics were calculated on the basis of the experimental results obtained from steady unidirectional flow conditions. The comparison between the experiment and analysis has shown that the effects of hysteresis and Reynolds number on torque coefficient should be considered in the analysis. Furthermore, running characteristics have been investigated from a viewpoint of the method of load control.

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Study on Centrifugal Pump for High Viscosity Liquids : Effect of Impeller Output Angle on the Pump Performance

Katsumi AOKI, Toru YAMAMOTO, Hiroaki OHTA, Yasuki NAKAYAMA

1985 Volume 51 Issue 468 Pages 2753-2758
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2753

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When centrifugal pumps are used for pumping high viscosity liquid, it is a problem that pump efficiency decreases as the viscosity of pumped liquid is higher. As the cause, the change of influence on the efficiency of various losses (for example, disc friction loss, the loss owing to the channel from inside impellers, leak loss, and collision loss), accompanying the change of flow within the pumps will be considered. In this study, taking notice of the loss of flow owing to channel from inside impellers, the effects of impeller outlet angle and number of blades on the pump efficiency, when high viscosity liquid is pumped up, were investigated.

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Study on the Cylindrical Combuster Flow with Swirling Flow : 1st Report, Characteristics of Flow Partarn for Swirle Number

Katsumi AOKI, Yasuki NAKAYAMA, Mitsuaki WAKATSUKI

1985 Volume 51 Issue 468 Pages 2759-2766
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2759

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This paper reports an experimental study on the circular duct flow superposed with swirling flow. In this study, three time-mean velocity components of swirling flow in circular duct is measured using five-hole pitot probe when the swirling numbers are changing from 0 to 1.35 by the axial flow type swirler. Further, the flow visualization is carried out using a streamer and the spark tracing method, and the flow patterns become clearer. From these results, the present study clarifies the location, size and shape of recirculation, eye of vortex and sub-recirculation zones for the swirling numbers, and maximum reverse flow rate of recirculatin zone.

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Combustion Characteristics of Hydrogen in a Test Swirl Combustor for a Micro Gas Turbine

Saburo YUASA, Noboru GOTO

1985 Volume 51 Issue 468 Pages 2767-2772
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2767

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The combustion characteristics of hydrogen in a test swirl combustor for a micro gas turbine have been studied by varying the following parameters; the swirl number of a vane-type swirler, the throat diameter of an air nozzle and the mean air jet velocity through the nozzle throat. It was found that, with high degree of swirl, a stable hydrogen flame attached to a hydrogen injector were formed even in high velocity air streams because of the formation of a reverse flow zone in the downstream region of the injector. The configurations of the stable flames and the temperature distributions in the combustor were scarcely sensitive to the swirl number and the air jet velocity, but were sensitive to the air nozzle throat diameter. At small throat diameters of the nozzle, diffusion type short hydrogen flames were formed and the temperature distributions in the combustor became uniform just downstream of the flames.

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A Study on the Diffusion of Matter from a Continuous Point Source in Uniform Mean Shear Flows : 2nd Report, Characteristics of the Concentration Fluctuation Intensity

Yasuhiko SAKAI, Ikuo NAKAMURA, Masafumi MIYATA, Hiroyuki TSUNODA

1985 Volume 51 Issue 468 Pages 2773-2780
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2773

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The turbulent diffusion process of dye solution has been examined experimentally in the case of a continuous point source in the water turbulent flows with three different uniform mean shear rates. In this paper, the experimental results of the concentration fluctuatin intensity are investigated. Already, the characteristics of the mean concentration field have been reported in ref. (1). The data show that the horizontal and vertical profiles of the r.m.s. values of the concentraiton fluctuation appear nearly similar and especially, vertical profiles skew to the side with the smaller flow velocity. The above characteristics are the same as the results of the mean concentration field. Further, by using the random rectangular wave model for the concentration fluctuating signal, an analysis for the concentration fluctuation intensity is made. The caluculated profiles expressed quite well the experimental results.

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Heat Transfer to Wall of Ceramic Combustion Chamber of Internal Combustion Engine

Yoshiteru ENOMOTO, Shoichi FURUHAMA

1985 Volume 51 Issue 468 Pages 2781-2787
Published: August 25, 1985
Released on J-STAGE: March 28, 2008

DOIhttps://doi.org/10.1299/kikaib.51.2781

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Thin film thermocouples have been successfully produced, using ceramics as body material, through the application of the technique used to make thin film thermocouples previously developed by the authors. The measurement of instantaneous temperature and instataneous heat flux, on the surface of the ceramic plate fixed on top of the piston, was accomplished using the thin film thermocouples thus developed. As the results, conditions of the heat transfer to the ceramic wall of high temperature have been determined.

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