scholarly journals Apparatus to determine the complex mass density of a viscous fluid contained in a rigid porous solid from acoustic pressure measurements

1989 ◽  
Vol 86 (S1) ◽  
pp. S119-S119
Author(s):  
Robert A. Mirick ◽  
Steven R. Baker ◽  
Oscar B. Wilson
Keyword(s):  
Viscous Fluid ◽  
Acoustic Pressure ◽  
Mass Density ◽  
Porous Solid ◽  
Pressure Measurements ◽  
Complex Mass

Pressure Measurements in a Rapidly Rotating and Coning, Highly Viscous Fluid

1983 ◽  
Author(s):  
Michael J. Nusca ◽  
William P. D'Amico ◽  
William G. Beims
Keyword(s):  
Viscous Fluid ◽  
Pressure Measurements

Love Wave Propagation in a Layered Piezoelectric Structure Immersed in a Viscous Fluid

2006 ◽  
Vol 306-308 ◽  
pp. 1211-1216 ◽  
Author(s):  
Fei Peng ◽  
Hua Rui Liu ◽  
S.Y. Hu
Keyword(s):  
Wave Propagation ◽  
Viscous Fluid ◽  
Love Wave ◽  
Mass Density ◽  
Transversely Isotropic ◽  
Love Waves ◽  
Perturbation Approach ◽  
Isotropic Layer ◽  
Piezoelectric Structure ◽  
Wave Sensors

This paper is addressed to the Love wave propagation in a layered piezoelectric structure immersed in a viscous fluid. The layered piezoelectric structure consists of an isotropic layer and a relatively thicker transversely isotropic piezoelectric substrate. The velocity of the Love waves changes due to the presence of the viscous fluid. The exact theory is accurate but not convenient to apply because it is generally difficult to get an explicit relation between the quantities we interest. In this paper, the perturbation approach is applied to obtain the explicit relations for the phase velocity and attenuation of Love waves. The result is useful for the measurement of the viscosity and mass density in Love wave sensors.

Determination of Unsteady Heat Release Distribution in Unstable Combustor from Acoustic Pressure Measurements

1999 ◽  
Vol 15 (4) ◽  
pp. 613-616 ◽  
Author(s):  
Timothy C. Lieuwen ◽  
Yedidia Neumeier ◽  
Ben T. Zinn
Keyword(s):  
Heat Release ◽  
Acoustic Pressure ◽  
Pressure Measurements

scholarly journals BIANCHI TYPE I ANISOTROPIC MAGNETIZED COSMOLOGICAL MODELS WITH VARYING Λ

2003 ◽  
Vol 12 (07) ◽  
pp. 1299-1314 ◽  
Author(s):  
ANIRUDH PRADHAN ◽  
OM PRAKASH PANDEY
Keyword(s):  
Magnetic Field ◽  
Viscous Fluid ◽  
Bianchi Type ◽  
Mass Density ◽  
Cosmological Models ◽  
Type I ◽  
Bianchi Type I ◽  
Bulk Viscous Fluid ◽  
Varying Λ ◽  
The Magnetic Field

Bianchi type I magnetized cosmological models in the presence of a bulk viscous fluid are investigated. The source of the magnetic field is due to an electric current produced along the x-axis. The distribution consists of an electrically neutral viscous fluid with an infinite electrical conductivity. The coefficient of bulk viscosity is assumed to be a power function of mass density. The cosmological constant Λ is found to be positive and is a decreasing function of time which is supported by results from recent supernovae observations. The behaviour of the models in the presence and the absence of magnetic field are also discussed.

Sign in / Sign up

Export Citation Format

Share Document