Interior Flow Visualization of a small pickup Truck

To make a good cabin air conditioning of the vehicle it's need sometimes to know about the air flow in it. This paper reports about the example to have approached to know it with the methods of tuft stick grid and numerical simulation. As the result we've recognized that we could easily visualize the air flow of cabin interior with tuft stick grid. And also it's effective to calculate the 3-D model to know more details.