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Experimental investigation of dimensionless velocity and shearing stress in boundary layer flow on continuous moving surface in power law fluids

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Abstract

An analysis is carried out to study the steady flow characteristics from a continuous flat surface moving in a parallel free stream of non-Newtonian power law fluid. The constitutive equations of the fluid are transformed into dimensionless ones. The velocity field is measured by Particle Image Velocimetry. Experimental results are obtained for the distribution of velocity. The influence of wall velocity ratio parameter on boundary layer flow field is observed in the experiment. Dimensionless velocity distribution and shearing stress distribution are obtained by post-processing experimental results. The effects of various physical parameters like velocity ratio parameter and similarity variable on various momentum transfer characteristics are discussed in detail and shown graphically. It is indicated that dimensionless velocity increases with velocity ratio parameter and similarity variable, and that dimensionless shearing stress decreases with velocity ratio parameter and similarity variable.

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Authors and Affiliations

  1. Key Laboratory of Renewable Energy Utilization Technologies in Buildings, Ministry of Education, Jinan, 250101, China

    Hao Zhang & Yuancheng Wang

  2. Shandong Key Laboratory of Building Energy-saving Technique, Shandong Jianzhu University, Jinan, 250101, China

    Hao Zhang & Yuancheng Wang

  3. School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan, 250101, China

    Hao Zhang & Yuancheng Wang

  4. Department of Thermal Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Xinxin Zhang

  5. Department of Mathematics and Mechanics, University of Science and Technology Beijing, Beijing, 100083, China

    Liancun Zheng

  6. College of Population, Resources and Environment, Shandong Normal University, Jinan, 250014, China

    Weiliang Wang

Authors
  1. Hao Zhang
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  2. Xinxin Zhang
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  3. Liancun Zheng
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  4. Weiliang Wang
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  5. Yuancheng Wang
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Zhang, H., Zhang, X., Zheng, L. et al. Experimental investigation of dimensionless velocity and shearing stress in boundary layer flow on continuous moving surface in power law fluids. J. Therm. Sci. 20, 115–118 (2011). https://doi.org/10.1007/s11630-011-0444-y

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  • DOI: https://doi.org/10.1007/s11630-011-0444-y

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