Yafei Jiao’s research while affiliated with Harbin Engineering University and other places

This article introduces a numerical scheme to simulate water impact on rigid structures, in which the air-water two phase flow is solved using the pressure-based Computational Fluid Dynamics method. This method is implemented using an in-house code, the General Transport Equation Analyser, which is an unstructured grid finite volume solver. The performance of the PC is greatly developed, so as expected the network can provide great computational capability. Based on this point, we developed a data structure system and parallel code. Two simple test cases have been done with the program and reasonable results were obtained. The air cushion has a great effect on the peak pressure of the impact process, while the impulse is almost constant with different air densities. Air density also influences the free surface distribution, which causes different flow characteristics.

In this paper, a numerical method based on finite volume method for diesel engine is presented. The production of combustion is assumed to be a grey medium and the scatter of particle is neglected. In this paper the unstructured finite-volume method (UFVM) for radiation has been formulated and implemented in an in-house fluid flow solver GTEA. For its comparison and validation of the present FVM on unstructured grids, a test case with 3D complex geometries is chosen, which was used by S. W. Baek et.al.[1]. The results obtained by the presented FVM agree well with the exact solutions. Radiation heat transfer in TBD620 diesel engines is studied with present numerical method. It is shown that the radiation has little effect on average pressure and temperature, but it changes the temperature distribution in cylinder.