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Water Wading refers to the situation where a car is moving through relatively deep water at low speed. The challenges of an automotive Original Equipment Manufacturer (OEM) is to integrate the functional parts like bumper, bumper grille, engine undercover, intake system etc., to enhance the vehicle quality and performance. One of the challenges in vehicle front end and engine room design is to prevent water entry into the air intake system during wading. If significant amount of water enter the air intake, some of the water could subsequently enter the engine cylinder, which would damage the critical components within the engine beyond repair. In general practice wading tests have been carried out during proto stage of vehicle development program to ensure vehicle performance. However a Computational Fluid Dynamics (CFD) method for carrying out water wading calculations early during the development phase offers reduction in development cost and time for a new vehicle.