Measurements of the thermal dissipation field in turbulent Rayleigh-Bénard convection.

  title={Measurements of the thermal dissipation field in turbulent Rayleigh-B{\'e}nard convection.},
  author={Xiaozhou He and Penger Tong},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  volume={79 2 Pt 2},
A systematic study of the thermal dissipation field and its statistical properties is carried out in turbulent Rayleigh-Bénard convection. A local temperature gradient probe consisting of four identical thermistors is made to measure the normalized thermal dissipation rate epsilonN(r) in two convection cells filled with water. The measurements are conducted over varying Rayleigh numbers Ra (8.9x10(8)<approximately Ra<approximately 9.3x10(9)) and spatial positions r across the entire cell. It is… CONTINUE READING

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