Convective heat transfer in rotating radial circular pipes (1st report, laminar region)

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Abstract A fully developed laminar flow field and temperature field in a pipe rapidly rotating around a perpendicular axis are analyzed theoretically, by assuming velocity and temperature boundary layers along the pipe wall. The resistance coefficient and the Nusselt number are obtained in the region of large values of ( N / χ ). The parameter N is the product of Re and \ gw, where \ gw is the ratio of Coriolis force to viscous force, and χ represents the effect of Coriolis force caused by the secondary flow. It is shown that the resistance coefficient and the Nusselt number increase remarkably, due to a secondary flow driven by Coriolis force. It is also shown by analyzing the two wall temperature conditions, i.e. the constant wall temperature gradient and the uniform wall temperature, that the Nusselt number is almost the same for both these conditions.

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