In this paper, we present a numerical simulator of unsteady flow velocity profile in the entrance region of a circular pipe by means of finite difference method (FDM). The simulator is useful in verifying the accuracy of velocity profiles estimated by the model-based technique proposed by us, since an approximated fluid line model of the entrance region in the pipe is used for the technique. The accuracy of the simulator itself is verified by comparing velocity profiles obtained by the simulator with (1) an analytical solution for fully developed flow and (2) experimental results for the entrance flow. The experimental results were obtained by using a beam scanning laser Doppler velocimeter (BS-LDV) which was developed in our laboratory and which can measure the velocity profile on a line by scanning the laser beam in a very short period of time.
|ジャーナル||Transactions of the Japan Society of Mechanical Engineers Series B|
|出版ステータス||Published - 1988 1月 1|
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