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Fluid Mechanics and Fluid Power – Contemporary Research pp 431–437Cite as

Computation of Variable Density Flows on Hybrid Unstructured Grids

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Part of the book series: Lecture Notes in Mechanical Engineering ((LNME))

Abstract

Variable density flows are basically those in which density variations cannot be neglected and hence the density is treated as a variable. This formidable change in density may be caused by either of three variables of the ideal gas equation (when dealing with gases) namely pressure, temperature and molar-mass. When pressure causes considerable change in density, the flow is no longer incompressible and they are dealt separately under compressible flows. But when density variation is caused by the other two aforementioned variables then the flow is still incompressible but the density will vary. Presence of varying density in governing equations poses a formidable challenge for numerical simulation as there is a very strong coupling between momentum and scalar transport equations. This work involves the development of three-dimensional Navier-Stokes solver to compute variable density incompressible flows on hybrid unstructured grids. The density variation due to temperature and species concentration has been considered.

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Acknowledgements

This study is funded by a grant from the DAE-BRNS, Government of India.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781 039, India

    Ankit Bajpai,  Jai Manik,  Mukul Parmananda,  Amaresh Dalal &  Ganesh Natarajan

Authors
  1. Ankit Bajpai
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  2. Jai Manik
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  3. Mukul Parmananda
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  4. Amaresh Dalal
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  5. Ganesh Natarajan
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Corresponding author

Correspondence to Ankit Bajpai .

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Editors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    Arun K. Saha

  2. Department of Aerospace Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    Debopam Das

  3. Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    Rajesh Srivastava

  4. Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    P. K. Panigrahi

  5. Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India

    K. Muralidhar

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Ankit Bajpai, Jai Manik, Mukul Parmananda, Amaresh Dalal, Ganesh Natarajan (2017). Computation of Variable Density Flows on Hybrid Unstructured Grids. In: Saha, A., Das, D., Srivastava, R., Panigrahi, P., Muralidhar, K. (eds) Fluid Mechanics and Fluid Power – Contemporary Research. Lecture Notes in Mechanical Engineering. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2743-4_41

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  • DOI: https://doi.org/10.1007/978-81-322-2743-4_41

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  • Publisher Name: Springer, New Delhi

  • Print ISBN: 978-81-322-2741-0

  • Online ISBN: 978-81-322-2743-4

  • eBook Packages: EngineeringEngineering (R0)

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