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The productivity level in an advanced manufacturing environment can be improved by proper design of mechanism at the initial stage in the manufacturing system. The aim of this paper is to model and simulate the design parameters of a conveyor system that transport parts from one production stage to another. The approach of model-based design and simulation was used to achieve optimal efficiency of...
Homogeneous Charge Compression Ignition (HCCI) engine has attracted great attention due to its improved performance and emissions compared to conventional engines. It can reduce both Nitrogen Oxides (NOx) and Particulate Matter (PM) emissions simultaneously without sacrificing the engine performance. However, controlling its combustion phasing remains a major challenge due to the absence of direct...
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-to...
-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...
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...
This study focuses attention on interstitial microwave hyperthermia, which is a popular medical procedure for treatment of pathological human tissues containing tumors. In the paper, the 2D finite element analysis is used to compare the models of the coaxial antenna with one, two and three air slots. The implemented models are based on the wave equation in the TM mode coupled with the Pennes equation...
A wind turbine works with the principle of extracting energy from the wind to generate electricity. The power generated is directly proportional to the wind speed available. There are two major types of wind turbine design namely the horizontal and vertical axis wind turbine depending on the orientation of the turbine rotor and its generator. This paper deals with the design of vertical turbine due...
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