.“ CFD analysis of pressure control valve used in abs using fluid structure interaction technique

The pressure control valve is an important part of the antilock braking system (ABS). The functioning of ABS depends upon the response of this valve and mainly upon the diaphragms used in this valve. There are three diaphragms in the valve which deform due to the air pressure at different stages of the valve operation. Thus, it is required to simulate the exact operating conditions of the valve using modern simulation techniques and try to optimize the performance of the valve. Fluid Structure Interaction (FSI), one of the modern simulation techniques is used in the ANSYS software to replicate the exact operating conditions of the valve and find the exact deformation of the diaphragms. The type of simulation currently used for the valve does not take into account the interaction between the air and the diaphragm. In this paper, different turbulent models are used for the steady state simulation and mesh independent study is presented. From the results, Shear State Transport model and a fine mesh with 5.7 million elements have been selected and steady state analysis is carried out. The one way FSI method which is a steady state technique has been used to find the deformation of the diaphragm. The difference between the simulation of the valve using FSI and without using FSI is presented. The deformation of the diaphragm is 3.42 mm. The change in deformation with the change in mass flow rate is also presented.