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- W2747611445 abstract "A new approach to study turbulent flow and conjugate heat transfer in tubes is proposed in this work. Instead of using the conventional finite element or finite volume methods, this formulation applies a different technique that calculates both for the flow and heat transfer. It discretizes the flow in the radial direction using a 4th order finite differences method, which is more accurate than the traditional 2nd order schemes. Using this technique, a system composed of several ordinary differential equations for the temperature and a set of linear equations for the velocities and pressure gradient is obtained. The equations are then integrated in the axial direction using a 4th order Runge-Kutta, method. The values of viscosity, density and thermal conductivity are dependent on temperature, which makes the model suitable for the calculation of high temperature gradients, as in the case of refinery fired heaters. The turbulence is taken into account using a zero order turbulence model." @default.
- W2747611445 created "2017-08-31" @default.
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- W2747611445 date "2000-01-01" @default.
- W2747611445 modified "2023-10-11" @default.
- W2747611445 title "Simulating flow and heat transfer in tubes using a fast CFD formulation" @default.
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- W2747611445 doi "https://doi.org/10.1016/s1570-7946(00)80068-1" @default.
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