Sand casting technologies have now emerged as practical and commercial ways of manufacturing high integrity near net shape castings. A variety of castings have found their way into general engineering applications. Castings that serve these specific applications have to achieve the quality requirements of superior mechanical properties and zero-porosity. To achieve these objectives within a limited time frame in a product development process, CAD technologies with numerical analysis combined with process simulation tools are increasingly used to optimize form filling and solidification of the cast parts. In this process the molten aluminum is introduced in the mold at 8000C, the ambient temperature and mold are at 300C. The top and side faces of the mold exchange heat with the environment by free convection. 2D Axi-symmetric behavior is assumed for sand mold and aluminum casting.