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Akademický článek
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Autor:
C. M. Sheih
Publikováno v:
Journal of Applied Meteorology. 19:557-561
Plume dispersion coefficients are discussed in terms of single-particle and relative diffusion, and are investigated as functions of averaging time. To demonstrate the effects of averaging time on the relative importance of various dispersion process
Publikováno v:
Water Resources Research. 13:901-908
Rapid-response instrumentation mounted on a fixed tower located centrally in a strongly heated cooling pond at a nuclear power facility has enabled evaluation of the turbulent fluxes of momentum, moisture, and sensible heat. The results agree well wi
Autor:
C. M. Sheih
Publikováno v:
Journal of Applied Meteorology. 17:140-147
A scheme is developed to minimize the pseudo-diffusion which arises in numerical solutions of finite-difference equations of turbulent diffusion and transport. In the present model, the subgrid scale distribution of the pollutant concentration is par
Publikováno v:
Journal of Applied Meteorology. 19:497-504
Atmospheric dispersion statistics in the Lagrangian frame have been evaluated over open water by using a double-theodolite system to track neutrally buoyant balloons released a few kilometers offshore during onshore winds. Analysis of the trajectorie
Autor:
C. M. Sheih
Publikováno v:
Journal of Applied Meteorology. 11:81-84
The paper presents typical spectra of probe motions, turbulence, and electronic noise of an airborne hot-wire anemometer. Their relative amplitudes as a function of aircraft size and velocity, hot-wire length, and turbulence dissipation are discussed
Autor:
C. M. Sheih
Publikováno v:
Journal of the Atmospheric Sciences. 29:995-998
An analytical solution of the wind velocity profile is obtained for the horizontally homogeneous planetary boundary layer with constant geostrophic wind velocity and with eddy diffusivity being constant in height and having periodic variations in tim
Publikováno v:
Journal of Physics E: Scientific Instruments. 3:1023-1025
The constant temperature hot-wire anemometer designed by Wyngaard and Lumley is modified to give an extended bandwidth operation. The technique of performing the frequency response test is also improved.