Unsteady drag force measurement in shock tube

Shock Waves ◽  
2005 ◽  
pp. 371-376 ◽  
Author(s):  
H. Tanno ◽  
T. Komuro ◽  
K. Sato ◽  
K. Itoh ◽  
S. Ueda ◽  
...  
Keyword(s):  
Shock Tube ◽  
Drag Force ◽  
Force Measurement ◽  
Unsteady Drag Force

Unsteady drag force measurements over bodies with various configurations in a vertical shock tube

Shock Waves ◽  
2005 ◽  
pp. 1001-1005 ◽  
Author(s):  
K. Tamai ◽  
T. Ogawa ◽  
H. Ojima ◽  
J. Falcovitz ◽  
K. Takayama
Keyword(s):  
Shock Tube ◽  
Drag Force ◽  
Force Measurements ◽  
Unsteady Drag Force

scholarly journals Shock Tube as an Impulsive Application Device

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Soumya Ranjan Nanda ◽  
Sumit Agarwal ◽  
Vinayak Kulkarni ◽  
Niranjan Sahoo
Keyword(s):  
Heat Transfer ◽  
Shock Tube ◽  
High Speed ◽  
Force Measurement ◽  
Peak Load ◽  
Wave Force ◽  
Impulsive Loading ◽  
Force Balance ◽  
Test Model ◽  
Impulse Facility

Current investigations solely focus on application of an impulse facility in diverse area of high-speed aerodynamics and structural mechanics. Shock tube, the fundamental impulse facility, is specially designed and calibrated for present objectives. Force measurement experiments are performed on a hemispherical test model integrated with the stress wave force balance. Similar test model is considered for heat transfer measurements using coaxial thermocouple. Force and heat transfer experiments demonstrated that the strain gauge and thermocouple have lag time of 11.5 and 9 microseconds, respectively. Response time of these sensors in measuring the peak load is also measured successfully using shock tube facility. As an outcome, these sensors are found to be suitable for impulse testing. Lastly, the response of aluminum plates subjected to impulsive loading is analyzed by measuring the in-plane strain produced during deformation. Thus, possibility of forming tests in shock is also confirmed.

Development of Bubble Departure Diameter Model Based on Force Analysis

2017 ◽  
Author(s):  
Ye Tian ◽  
Wei Huang ◽  
Pengfei Li ◽  
Simin Cao ◽  
Yan Sun
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Drag Force ◽  
Bubble Dynamics ◽  
Hydrodynamic Pressure ◽  
Surface Tension Force ◽  
Force Analysis ◽  
Pressure Force ◽  
Model Based ◽  
Unsteady Drag Force

Bubble departure diameter has significant effect on bubble dynamics and heat transfer in boiling system, and it is difficult to be measured in a boiling system. Therefore, a method to predict bubble departure diameter is necessary to study of bubble dynamics and heat transfer in boiling system. A new theoretical model based on force analysis is proposed for the prediction of bubble departure diameter in vertical boiling system in this paper. Surface tension force, unsteady drag force, quasi-steady drag force, shear lift force, buoyancy force, hydrodynamic pressure force and contact pressure force are taken into account to build the model. Chen’s experimental data is used to validate the model, the averaged relative deviation between the predict results of the model and the experimental data is less than ±14.8%.

Drag force measurement: A means for determining hysteresis loss

2006 ◽  
Vol 99 (8) ◽  
pp. 08D910 ◽  
Author(s):  
Ivan J. Garshelis ◽  
Stijn P. L. Tollens ◽  
Ryan J. Kari ◽  
Lode P. Vandenbossche ◽  
Luc R. Dupré
Keyword(s):  
Drag Force ◽  
Force Measurement ◽  
Hysteresis Loss

A Study of Particle Settling in Non-Newtonian Fluids—Part I: A New Method for the Study of Particle Settling in Drilling and Fracturing Fluids

1994 ◽  
Vol 116 (1) ◽  
pp. 10-15 ◽  
Author(s):  
L. Jin ◽  
M. E. Chenevert
Keyword(s):  
Reynolds Number ◽  
Drag Force ◽  
Force Measurement ◽  
Newtonian Fluids ◽  
Particle Settling ◽  
Number Range ◽  
Fracturing Fluids ◽  
Wide Range ◽  
Good Set ◽  
Settling Of Particles

A drag force measurement method is presented which makes it possible to study the settling of particles in transparent and opaque fluids. A dimensionless treatment that takes into account the shear thinning effects of fluids was applied to normalize the measured drag force data. A wide range of particle Reynolds numbers can be covered by this method and a profile of friction factor versus Reynolds number can be established by the proposed dimensionless treatment. An algorithm for the prediction of settling of particles in non-Newtonian fluids was introduced. It can be executed by a computer program. With a good set of experimental data, the settling velocities predicted by the computer model are very close to the measured ones in the fluids tested. This method can be used to study the suspension properties of drilling and fracturing fluids, transparent or opaque. The wide coverage of Reynolds number range simplifies the experiment.

scholarly journals Application of the fluctuation theorem for noninvasive force measurement in living neuronal axons

2018 ◽  
Vol 29 (25) ◽  
pp. 3017-3025 ◽  
Author(s):  
Kumiko Hayashi ◽  
Yuta Tsuchizawa ◽  
Mitsuhiro Iwaki ◽  
Yasushi Okada
Keyword(s):  
Thermodynamic Properties ◽  
Axonal Transport ◽  
Drag Force ◽  
Force Measurement ◽  
Force Production ◽  
Measurement Methods ◽  
Fluctuation Theorem ◽  
Nonequilibrium Systems ◽  
Unit Value

Although its importance is recently widely accepted, force measurement has been difficult in living biological systems, mainly due to the lack of the versatile noninvasive force measurement methods. The fluctuation theorem, which represents the thermodynamic properties of small fluctuating nonequilibrium systems, has been applied to the analysis of the thermodynamic properties of motor proteins in vitro. Here we extend it to the axonal transport (displacement) of endosomes. The distribution of the displacement fluctuation had three or four distinct peaks around multiples of a unit value, which the fluctuation theorem can convert into the drag force exerted on the endosomes. The results demonstrated that a single cargo vesicle is conveyed by one to three or four units of force production.

Drag force measurement of single spherical collectors with deposited particles

AIChE Journal ◽  
1981 ◽  
Vol 27 (3) ◽  
pp. 364-372 ◽  
Author(s):  
Hemant Pendse ◽  
Chi Tien ◽  
R. M. Turian
Keyword(s):  
Drag Force ◽  
Force Measurement
Sign in / Sign up

Export Citation Format

Share Document