Efficient Numerical Analysis for Dynamic Stability of Pipes Conveying Fluids

Based on the Floquet-Liapunov theory, this paper proposes an efficient one-dimensional search approach for stability analysis of pipes conveying pulsatile flow. The instability boundaries of a clamped-clamped pipe analyzed in this paper. The numerical results are satisfactory compared with existing results. Moreover, an instability region which failed to appear in ordinary numerical analyses is detected by our computations.

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9540363 One-dimensional numerical analysis of pulsatile flow through pipe with nozzle or elbow Masaki Endo (Tokyo Metropolitan College of Technology), Junjiro Iwamoto (Tokyo Denki University)

JSAE Review ◽

10.1016/0389-4304(96)83331-5 ◽

1996 ◽

Vol 17 (1) ◽

pp. 98

Keyword(s):

Numerical Analysis ◽

Pulsatile Flow ◽

Tokyo Metropolitan ◽

One Dimensional ◽

College Of Technology ◽

Flow Through ◽

Metropolitan College

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Numerical Analysis of Dynamic Stability of Elastic Truss Structures

International Journal of Space Structures ◽

10.1177/026635119801300203 ◽

1998 ◽

Vol 13 (2) ◽

pp. 75-81 ◽

Cited By ~ 3

Author(s):

Qi-Lin Zhang ◽

Udo Peil

Keyword(s):

Stability Analysis ◽

Numerical Analysis ◽

Dynamic Stability ◽

Time Domain ◽

Truss Structures ◽

Equilibrium Equations ◽

Numerical Examples ◽

Motion Trajectories ◽

Dynamic Excitations ◽

Energy Increment

In this paper the concept of energy increment map is presented for stability judgement of elastic truss structures under arbitrary dynamic excitations. The modified member theory is adopted to establish the equilibrium equations of the structures. The motion trajectories of structures are numerically solved in time domain and the corresponding stability states are studied according to the energy increment map. Numerical examples show that the method of this paper can lead to satisfactory results in dynamic stability analysis of elastic truss structures.

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Aerodynamic and stability analysis of personal vehicle in tandem-wing configuration

Proceedings of the Institution of Mechanical Engineers Part G Journal of Aerospace Engineering ◽

10.1177/0954410016662077 ◽

2016 ◽

Vol 231 (11) ◽

pp. 2146-2162 ◽

Cited By ~ 6

Author(s):

Tomasz Goetzendorf-Grabowski ◽

Marcin Figat

Keyword(s):

Stability Analysis ◽

Dynamic Stability ◽

Transport System ◽

General Concept ◽

Air Transport ◽

Numerical Analyses ◽

Transport Systems ◽

Aerodynamic Design ◽

Advantages And Disadvantages ◽

University Of Technology

The paper presents a concept of tandem-wing configuration aircraft that was a Warsaw University of Technology proposal for the personal air transport system. The project was developed at Warsaw University of Technology, within the PPLANE project (FP7 – Personal Plane: Assessment and Validation of Pioneering Concepts for Personal Air Transport Systems). First, analysis of the general concept, advantages and disadvantages of tandem-wing configuration, and possible application as a personal air transport system vehicle are presented. Next, aerodynamic design is analyzed and dynamic stability is tested. All numerical analyses were made by use of the well-tested professional software for aerodynamic (MGAERO) and stability (SDSA) analyses.

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