液膜形成と液滴・液膜干渉を考慮した壁面衝突噴霧の分散と混合気形成過程のモデリング

抄録

In this study, a new submodel concerning fuel film formation process is proposed order to simulate the behavior of diesel spray impingement on wall surface. Here, super-heating degree of the surface, defined by the temperature difference between the wall surface and the fuel saturated temperature, is newly considered for behavior of impinged liquid droplets. In this spray impingement submodel, fuel film formation process, droplet interaction film breakup process, and velocity and direction of dispersing droplets were considered based on several experimental results. This new submodel was incorporated into KIVA-II code. As a results, it is found that the calculated results of impinging spray behavior by the new model agree well with experimental results.