Diesel engines are becoming smaller as technology advances, which means that the fuel spray (or jet) interacts with the cylinder walls before combustion starts. Most fuel injection 1D models (especially for diesel fuel) do not consider this interaction. Therefore, a wall-jet sub-model was created on an Eulerian 1D diesel spray model. It was calibrated using data from the literature and validated with experimental data from a fuel spray impacting a plate in a constant volume combustion chamber. Results show that the spray moving along the wall has a higher mixing rate but less penetration as an equivalent free jet, therefore they show a similar volume. Spray-wall interaction creates a stagnation zone right before the impact with the wall, and friction of the jet with the wall is relatively low. All these phenomena are well captured by the wall-jet sub-model.

随着技术的进步，柴油发动机变得越来越小，这意味着燃料喷雾（或射流）在燃烧开始之前与气缸壁相互作用。大多数燃油喷射一维模型（尤其是柴油）不考虑这种相互作用。因此，在欧拉一维柴油喷雾模型上创建了壁式喷射子模型。它使用文献中的数据进行校准，并使用来自燃料喷雾撞击定容燃烧室中的板的实验数据进行验证。结果表明，沿壁移动的喷雾具有较高的混合速率，但作为等效自由射流的穿透性较低，因此它们显示出相似的体积。喷射壁相互作用在与壁碰撞之前产生了一个停滞区，射流与壁的摩擦相对较低。