A new method of measuring shock expansion tube test flow velocities

We have discovered a new method of generating electric currents, directly from high pressure-induced flow of neutral ionic solutions. The mechanism is that the cations and anions have different flow velocities, if their atomic masses are dramatically different, due to different accelerations generated from the high applied pressure. The generated electric current is very sensitive to the strengths of the applied pressure, and it might be potentially used for detection of atomic masses and pressures.

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New Method for Quantifying and Correcting Underestimated Cardiac Doppler Blood Flow Velocities: In Vitro and In Vivo Studies

Ultrasound in Medicine & Biology ◽

10.1016/j.ultrasmedbio.2012.05.016 ◽

2012 ◽

Vol 38 (10) ◽

pp. 1778-1783 ◽

Cited By ~ 1

Author(s):

Zhen Wang ◽

Tie-sheng Cao ◽

Li-jun Yuan ◽

Yong Yang ◽

Jie Liu ◽

...

Keyword(s):

Blood Flow ◽

New Method ◽

In Vivo Studies ◽

Blood Flow Velocities ◽

Cardiac Doppler ◽

Flow Velocities

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Test Flow Conditions for the Expansion Tube Experiment

10th AIAA/ASME Joint Thermophysics and Heat Transfer Conference ◽

10.2514/6.2010-4786 ◽

2010 ◽

Cited By ~ 4

Author(s):

Yasunori Nagata ◽

Katsumi Wasai ◽

Hitoshi Makino ◽

Kazuhiko Yamada ◽

Takashi Abe

Keyword(s):

Flow Conditions ◽

Expansion Tube ◽

Test Flow

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THERMO-CHEMICAL NONEQUILIBRIUM PHENOMENA OF THE STRONG SHOCK WAVE TO GENERATE HYPERVELOCITY TEST FLOW

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194514603834 ◽

2014 ◽

Vol 34 ◽

pp. 1460383

Author(s):

HU ZONG MIN ◽

WANG CHUN ◽

JIANG ZONG LIN ◽

KHOO BOO CHEONG

Keyword(s):

Shock Wave ◽

Experimental Study ◽

Strong Shock ◽

Strong Shock Wave ◽

Test Facility ◽

Flow Conditions ◽

Expansion Tube ◽

Chemical Nonequilibrium ◽

Nonequilibrium Phenomena ◽

Test Flow

To generate the hypervelocity (above 5 km/s) test flow for the experimental study of reentry physics, a shock-expansion tube or tunnel is the only qualified test facility by far. In such a facility, the working gas shall be compressed by an extremely strong shock wave, e.g., Ms=27.7 for the 8 km/s test condition. Therefore, thermo-chemical nonequilibrium phenomena may occur in the gas post the shock wave. Such phenomena, consequently, can incur difficulties in diagnostic and measurement to experimental study, and instability problems to numerical analysis on the other hand. The present paper will focus on the numeric-aid diagnostics of the flow conditions.

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