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Application of the dynamics of variable mass systems to the Pelton turbine

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This paper deals with an alternative approach to calculate the performance of a Pelton turbine. The discussion begins with an overview on the statement of Newton's second law for variable mass systems. Then the integral form of the Navier-Stokes equation is presented as a special case,which is useful to evaluate the force exerted by the water jet on the turbine buckets. Although the traditional approach based on the angular momentum theorem is more straightforward, the proposed method allows evaluation of the different contributions to the motive force by a suitable choice of control volumes. This in turn makes for a better understanding of factors that penalize overall performance when
the ideal assumptions, under which the theory is usually developed, are no longer verified.

Keywords variable mass system; Pelton turbine; Navier-Stokes equation

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Judul Seri

International Journal of Mechanical Engineering Education

No. Panggil

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Penerbit

: Manchester University Press., 2014

Deskripsi Fisik

International Journal of Mechanical Engineering Education, Volume 42, Number 1 (January 2014

Bahasa

English

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Tipe Media

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Edisi

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