An insight into the drag and lift characteristics of modified Bach and Benesh profiles of Savonius rotor

被引：28

作者：

Alom, Nur ^{[1
]}

Borah, Bastav ^{[2
]}

Saha, Ujjwal K. ^{[3
]}

机构：

[1] Natl Inst Technol Meghalaya, Dept Mech Engn, Shillong 793003, Meghalaya, India

[2] Indian Inst Technol Guwahati, Dept Mech Engn, Gauhati 781039, India

[3] Indian Inst Technol Guwahati, Dept Mech Engn, Gauhati 781039, India

来源：

SPECIAL ISSUE OF THE FOURTH INTERNATIONAL SYMPOSIUM ON HYDROGEN ENERGY, RENEWABLE ENERGY AND MATERIALS, 2018 (HEREM 2018) | 2018年 / 144卷

关键词：

Savonius rotor; modified Bach profile; Benesh profile; RANS; drag coefficient; lift coefficient; SST k-omega; PERFORMANCE; FORCES;

D O I：

10.1016/j.egypro.2018.06.007

中图分类号：

X [环境科学、安全科学];

学科分类号：

083001 [环境科学];

摘要：

This investigation is focused on studying the flow physics around a modified Bach and Benesh profiles of Savonius rotor. A considerable amount of research has been done on improving the efficiency of Savonius rotors by optimizing the various design parameters. But most of these studies concentrate on power and torque coefficients. Deeper investigation of drag and lift characteristics could result in refming the efficiency. In view of this, 2D unsteady simulations are conducted using multi-physics CFD solver to find the instantaneous forces (drag and lift) acting on the rotors. The shear stress transport (SST) k-omega turbulence model is used for solving 2D unsteady Reynolds Averaged Navier-Stokes (RANS) equations. The total pressure, velocity magnitude and turbulence intensity contours are created at various angle of rotor rotation. The investigation shows that the drag coefficient (CD) for the modified Bach profile is higher than the Benesh profile. The results obtained are compared with those of semicircular profile at the identical conditions. Copyright (C) 2018 The Authors. Published by Elsevier Ltd.

引用

页码：50 / 56

页数：7

共 18 条

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