Vortex Breakdown Phenomena in a Circular Pipe : 4th Report, Mechanism of Axisymmetric Bubble Type Breakdown
スポンサーリンク
概要
- 論文の詳細を見る
This is a report on an investigation of the relation between an axisymmetric vortex breakdown and a stationary internal wave in a swirling flow field. An approximate mathematical model of the internal wave (wave disturbance) is constructed in consideration of fluid viscosity. Experiments are carried out on a swirling flow in a rotating pipe. The flow field, where internal waves occur, is observed by a visualization technique and is measured by a laser-Doppler-velocimeter. The effect of the upstream boundary condition on the internal wave is examined both by experiments and numerical calculations. The results are summarized as follows. A stationary internal wave occurs in a rotating pipe when the rotation is faster than a certain critical value. The characteristics of the waves are predicted fairly well by an approximate mathematical model. The bubble type breakdown is ultimately identified with the stationary internal wave of a sufficiently large amplitude.
- 一般社団法人日本機械学会の論文
著者
-
Suematsu Yoshikazu
School Of Engineering Nagoya University
-
Suematsu Yoshikazu
Department Of Mechanical Engineering Nagoya University
-
ITO Tadaya
School of Engineering, Nagoya University
-
HAYASE Toshiyuki
School of Engineering, Nagoya University
-
Ito Tadaya
Aichi Institute Of Technology
-
Ito Tadaya
School Of Engineering Nagoya University
-
Ito Tadaya
Faculty Of Engineering Aichi Institute Of Technology
-
SUEMATSU Yoshikazu
Faculty of Engineering, Nagoya University
関連論文
- Digital Control of Electrohydraulic Servo System Operated by Differential Pulse Width Modulation
- Vortex Breakdown Phenmena in a Circular Pipe : 2nd Report, Flow Modes of Unsteady Type Breakdowns
- Vortex Breakdown Phenomena in a Circular Pipe : 1st Report, Modes of Stationary Breakdown
- Digital Control of Hydraulic Actuator System Operated by Differential Pulse Width Modulation
- A Study on a Bistable Fluid Amplifier Load Oscillator : 1st Report, On Flow Characteristics of a Bistable Fluid Amplifier
- Growing Process and Structure of Axisymmetric Vortex Breakdown (Experiments on the Bubble Growing Process)
- Growing Process and Structure of Axisymmetric Vortex Breakdown : 2nd Report, Numerical Analysis Based on the Navier-Stokes Equations
- Growing Process and Structure of Axisymmetric Vortex Breakdown : 1st Report, An Inviscid Linear Model of the Growing Process of a Bubble
- A Study on the Vortex Oscillator : 1st Report, On a Mathematical Model of a Confined Vortex Oscillator
- A Study on a Bistable Fluid Amplifier Load Oscillator : 2nd Report, A Mathematical Model for the Oscillator
- A Study on a Fluidic Oscillator with Feedback Tubes : Nonmemory Bistable Fluid Amplifier Oscillator
- Oscillating Phenomena of a Jet in a Jet-Edge System : 2nd Report, Mechanism of Oscillation
- Oscillating Phenomena of a Jet in a Jet-edge System : 1st Report, Behavior and Frequency of an Oscillating Jet
- A Study on Oscillatory Jet in a Cavity : lst Report, Mechanism of Oscillation
- Two Dimensional Flow between Eccentric Rotating Cylinders
- Distribution Patterns of Eigenvalues of Laminar Pipe Flow (Classification of Modes Based on Dynamics of the System)
- Vortex Breakdown Phenomena in a Circular Pipe : 4th Report, Mechanism of Axisymmetric Bubble Type Breakdown
- Vortex Breakdown Phenomena in a Circular Pipe : 5th Report, Axisymmetric Breakdown in Rotating Conical Pipes
- Experiments on the Elastoid-inertia Oscillations of a Rigidly Rotating Fluid in a Cylindrical Vessel
- On the Oscillatory Phenomena in a Swirling Pipe Flow : 1st Rep. Experiments on the Precession of the Vortex
- Oscillation Phenomena in a Conduit with a Pilot-Valve and a Pulsating Flow Source
- Study on the Instability in a Loaded Hydraulic Servo-Mechanism : 1st Report, Effects of Compressibility of Oil and Sustained Oscillations
- Experiments on the Surging of a Blower
- Instability of an Oil Hydraulic Jet-Pipe Servomechanism
- Study on the Self-Sustained Oscillation of a Piston-Type Valving System : 2nd Report, Analysis of a Valving System with a Capacity and Some Experiments
- Study on the Self-Sustained Oscillation of a Piston-Type Valving System : 1st Report, Analysis of a Simple Valving System and Some Experiments