THEORY OF VON KARMA AND POHLHA. E. USED TO OBTAIN PRANDTL NUMBERS, NUSSELT AND REYNOLDS
THEORY OF VON KARMA AND POHLHA. E. USED TO OBTAIN PRANDTL NUMBERS, NUSSELT AND REYNOLDS
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DOI: 10.22533/at.ed.3173422315124
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Palavras-chave: Von Karman , Fourier, Laplace, Volterra, Reynols
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Keywords: Von Karman, Fourier, Laplace, Volterra, Reynols
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Abstract:
Theodore von Kármán and Pohlhausen E. developed an integral method for solving partial differential equations. This method is easier to apply than classical methods, such as Fourier, Laplace or Vito Volterra. The von Kármán and Pohlhausen method is based on the basic momentum equation for constant and incompressible flows. The equation is integrated over the thickness of the boundary layer. The result is an integral equation that relates the velocity, pressure, and temperature in the boundary layer.
The method can be applied to a variety of flow problems. In the article, it is applied to the hydrodynamic and thermal boundary layer. The results are compared with those published in the literature and are in good agreement. To obtain a better approximation to the solution of the integral equation, the degree of the algebraic polynomial used in the integration can be increased.
- Alfonso Jorge Quevedo Martínez
- Esiquio Martin Gutierrez Armenta
- Marco Antonio Gutiérrez Villegas
- Israel Isaac Gutiérrez Villegas
- Javier Norberto Gutiérrez Villegas
- José Alejandro Reyes Ortiz
- Josué Figueroa González