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Instabilities developed in stratified flows over pronounced obstacles

Author

Listed:
  • Varela, J.
  • Araújo, M.
  • Bove, I.
  • Cabeza, C.
  • Usera, G.
  • Martí, Arturo C.
  • Montagne, R.
  • Sarasúa, L.G.

Abstract

In the present work we study numerical and experimentally the flow of a two-layer stratified fluid over a topographic obstacle. The problem reflects a wide number of oceanographic and meteorological situations, where the stratification plays an important role. We identify the different instabilities developed by studying the pycnocline deformation due to a pronounced obstacle. The numerical simulations were made using the model caffa3D.MB which works with a numerical model of Navier–Stokes equations with finite volume elements in curvilinear meshes. The experimental results are contrasted with numerical simulations. Linear stability analysis predictions are checked with particle image velocimetry (PIV) measurements.

Suggested Citation

  • Varela, J. & Araújo, M. & Bove, I. & Cabeza, C. & Usera, G. & Martí, Arturo C. & Montagne, R. & Sarasúa, L.G., 2007. "Instabilities developed in stratified flows over pronounced obstacles," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 386(2), pages 681-685.
    • Handle: RePEc:eee:phsmap:v:386:y:2007:i:2:p:681-685
    DOI: 10.1016/j.physa.2007.08.051
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    References listed on IDEAS

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    1. Quirin Schiermeier, 2007. "Churn, churn, churn," Nature, Nature, vol. 447(7144), pages 522-524, May.
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    Cited by:

    1. Khalil Ur Rehman & Andaç Batur Çolak & Wasfi Shatanawi, 2022. "Artificial Neural Networking (ANN) Model for Drag Coefficient Optimization for Various Obstacles," Mathematics, MDPI, vol. 10(14), pages 1-20, July.

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