Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Katsuhisa Noto"'
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part B: Fundamentals. 68:257-293
The discontinuity (DC) and dislocation (DL) in a physical property, e.g., temperature T*, besides vortex spiral (SP) [1, 2], are extremely important for wake elucidation, but have not been studied yet. The power spectrum density (PSD) of T* always ha
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part B: Fundamentals. 66:77-108
The variation of vortex dislocations (VD) with cylinder heating, and turbulence wrecks (TW) or imaginary VD, in isothermal and heated wakes have not been elucidated at all. Therefore unified 3-D streaklines, VD, TW, and their variations with cylinder
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part B: Fundamentals. 66:43-76
A variation of strong turbulence anisotropy (STA) with cylinder heating, and, as a result, STA suppression, are here first elucidated in the air heated wake in the transitional state at Reynolds number Re = 300 and Richardson number Ri = 0.3. Simulta
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part A: Applications. 57:18-39
Common and different characteristics among the cooled vortex street, cooled Karman vortex street, and isothermal wavy wake in the cooled laminar wake above the isothermal or cooled circular cylinder exposing in the upward mainstream of mercury, air,
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part B: Fundamentals. 56:167-189
The isothermal wake from a circular cylinder at Reynolds number Re = 300 is analyzed numerically by direct numerical simulation (DNS). The DNS noise, anisotropic turbulence, and vortex dislocation mechanism are elucidated as follows: The coordinates
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part A: Applications. 54:866-889
First, the dominant action in the cooled wakes in mercury and water at the Reynolds number Re = 22 and 44 is discussed. Next, the cooled wake at Re = 22 is numerically simulated and is compared with the previous results at Re = 44. Finally, effects o
Autor:
Keigo Nakai, Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part B: Fundamentals. 53:313-357
For the turbulent thermal plume of air developing in stably stratified air above a square heated plate on a horizontal solid surface with infinite area, the formulation and numerical methodology for direct numerical simulation (DNS) are developed, th
Autor:
Katsuhisa Noto
Publikováno v:
Numerical Heat Transfer, Part A: Applications. 53:1054-1073
Cooled wakes of mercury and water are numerically simulated, and computed results are shown and discussed. As a result, effects of fluid kinds on wake patterns, i.e., the streaklines, streamlines, equi-vorticity lines, and isothermal lines, are eluci
Autor:
Katsuhisa Noto
Publikováno v:
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 74:1098-1106
Cooled wakes of mercury and water are numerically simulated, and computed results are shown and discussed. As a result, effects of fluid kinds on wake patterns, i.e. the streaklines, streamlines, equi-vorticity lines, and isothermal lines, are elucid
Autor:
Katsuhisa Noto, Satoshi Sugimura
Publikováno v:
Numerical Heat Transfer, Part A: Applications. 52:875-909
A strongly cooled, circular cylinder wake with an upward main stream of air at low Reynolds number Re, i.e., 15 ≦ Re ≦ 44, is analyzed numerically, and is elucidated as follows. (1) A new vortex street, i.e., a “cooled vortex street,” is disc