ABSTRACT
This chapter begins with reviewing the fundamentals of fluid mechanics. It analyses a better understanding of the motion of fluid around objects as well as the fluid behavior in complex circulatory systems by conducting fluid analysis. Computational fluid dynamics (CFD) simulation complements experimental testing, helps reduce cost and turnaround time for design iterations, and has become an indispensable tool whenever practical design involving fluids is required. The chapter discusses fluid analysis using ANSYS® Workbench. It also discusses the governing equations in fluid dynamics, main variables of concern, boundary conditions, and procedures in conducting CFD modeling and analysis. The chapter conducts fluid analysis of the air flow passing through a truck. The topics include fluid domain specification, meshing, boundary condition assignments, and solution visualization. In CFD analysis, mesh quality has a significant impact on the solution time and accuracy as well as the rate of convergence. The common fluid boundary conditions include the inlet, outlet, opening, wall, and symmetry plane.
