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A new numerical method is presented to study free surface waves in coastal areas. The method is based on the phase resolving variational Boussinesq model (VBM) which is solved on a computational staggered grid domain. In this model, the non-hydrostatic pressure term has been incorporated in order to correctly described short wave dynamics. In simulating run-up phenomena, a special treatment, so-called...
Smoothed particle hydrodynamics (SPH) is meshless-based numerical method to simulate free-surface flow problems. In this paper, water wave impact on a floating object is studied by implementing SPH method. An open-source DualSPHysics code which is developed based on SPH theory is used to simulate three-dimensional (3D) free-surface flow with floating object. Graphical processing units (GPUs) parallel...
Cryosurgery is a medical technique to destroy unwanted tissue using extreme low temperature from a medium conducted using one or some cryoprobes with an minimum risk. Conventionally the configuration of cryoprobes (the number of cryoprobes and how to place them) has been applied using experience from trial and error methods of the cryosurgeon, so that it requires a method to optimize the configuration...
In this paper, numerical simulation of small-caliber projectile during external ballistic is presented. This work is aimed to find safe location to install microelectromechanical system (MEMS) inside a small-caliber projectile based on history and distribution of temperature. The MEMS technology is applied to increase performance of the projectile and it must be protected from damage due to high temperature...
In this article, mathematical modeling and numerical simulation of phase change materials (PCMs) used as latent heat thermal energy storage in a solar cooker have been conducted. The PCM to store thermal energy is packed in many small hollow cylinders and placed in a larger cylinder tank. Heat transfer fluid (HTF) which flows parallel to the PCM cylinder is used to distribute heat from the solar collector...
Cryosurgery is a technique of cancer treatment by providing extremely cold temperature to destroy abnormal cells. In this article, cryosurgery simulation of lung cancer is presented. Mathematical formulation of cryosurgery procedure is governed by heat conduction equations both in the solid and liquid phase which then reformulated into enthalpy form. Godunov method is used to obtain the numerical...
This article deals with traffic ow simulation in a single road via fluid dynamics approach. The Lighthill-Whitham-Richards (LWR) model is used to describe traffic ow in the road which is represented by density and average speed of vehicles. Numerical approximation of the LWR model formulated as scalar conservation laws is obtained by implementing finite volume method. Several test cases are presented...
A Stefan problem is a free boundary problem where a phase boundary moves as a function of time. In this article, we consider one-dimensional and two-dimensional enthalpy-formulated Stefan problems. The enthalpy formulation has the advantage that the governing equations stay the same, regardless of the material state (liquid or solid). Numerical solutions are obtained by implementing the Godunov method...
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