Abstract
In order to keep this analysis within reasonable bounds, attention is confined to homogeneous gas phase reactions in round tubes. Other reactors and conditions are considered separately. The existence of a radial variation in the mixed-mean velocity in a tubular reactor for all rates of flow is universally recognized, but its effects on the conversion are often ignored. The direct effects of the interactions between reaction and transport, including that of the heat of reaction on the heat transfer coefficient, the change in composition on the mass transfer coefficient, and the turbulent fluctuations in temperature and in concentration on the rate of reaction, have been the subject of many analyses, but have not been generalized, and go unmentioned in most textbooks on either chemical reaction engineering or transport. These several effects are examined and evaluated. It is found that although they are second-order in magnitude in some applications, they are critical in others, and should not be ignored.
