Study on the Swirling Flow Field in a Rotating Cylinder : Numerical Analysis
スポンサーリンク
概要
- 論文の詳細を見る
The swirling flow field, including unsteady non-axisymmetric phenomena in a rotating hollow turbine shaft, is solved using computational fluid dynamics. The three-dimensional compressible Navier-Stokes equations are adopted and discretized by an implicit TVD scheme. No axisymmetric assumption is applied in order to find non-axisymmetric phenomena. The computational domain, therefore, is extended circumferentially to 360° and axisymmetric boundary conditions along the center axis are avoided. The existence of a rotating spiral vortex at the place where the swirling flow turns radially outward is shown. The spiral vortex rotates about the shaft center axis in the same direction as the tangential velocity of the main flow. Conversely, the vortex has a spiral form opposite the rotational direction of the fluid. The first non-axisymmetric mode of a single spiral vortex is transformed into the second mode of a double spiral vortex at a specific rotating speed of the shaft.
- 一般社団法人日本機械学会の論文
- 2000-05-15
著者
-
Kaji Shojiro
Department Of Aeronautics And Astronautics University Of Tokyo
-
Kishibe Tadaharu
Hitachi Ltd.
-
Kaji Shojiro
Department Of Aeronautics And Astronautics Faculty Of Engineering The University Of Tokyo
関連論文
- A104 STARTING CHARACTERISTIC ANALYSIS OF A RADIAL INFLOW TURBINE FOR THE RE-GENERATIVE BRAYTON CYCLE(Gas Turbine-1)
- TS-6 Design Study of Helium Turbine for the 600MWt HTGR-GT Power Plant(Session A-2: Development 2)
- The Effects of Aspect Ratio of a Finite Length Slit on the Mixing in the Three-Dimensional Supersonic Flow
- Acoustic Characteristics of Orifice Holes Exposed to Grazing Flow
- The Two-Dimensional Supersonic Flow and Mixing Field with a Perpendicular Injection
- Study on the Swirling Flow Field in a Rotating Cylinder : Numerical Analysis
- Study of Transonic Cascade Airfoils by a Panel Method : Series B : Fluids Engineering, Heat Transfer, Combustion, Power, Thermophysical Properties
- Theoretical Study on the Unsteady Aerodynamic Characteristics of an Oscillating Cascade with Tip Clearance (In the Case of a Nonloaded Cascade)
- Theoretical Study on the Unsteady Aerodynamic Characteristics of an Oscillating Cascade with Tip Clearance : In the Case of Loaded Cascade
- Experimental Study on Unsteady Aerodynamic Characteristics of an Oscillating Cascade with Tip Clearance
- The Injection Methods and Mixing Characteristics in the Two-Dimensional Supersonic Free Stream
- The Three-Dimensional Supersonic Flow and Mixing Fields with a Perpendicular Air Injection from a Finite Length Slit
- The Effects of Acoustically Lined Walls on Cascade Flutter