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The present models for flow maldistribution in the tube-side deal only with the maximum possible velocity deviation.
The velocity deviation between Gassmann's prediction and experimental observations increases as the increase of shear modulus change.
For basic geometric dimensions parametric representations are derived concerning pitch cones, contact normal, spiral angles, limit pressure angles, sliding velocity deviation, friction loss, and efficiency.
The results shown that inlet duct with 23° angle and movable plate with 200 mm length is better than others based on hydrodynamics with minimum velocity deviation and pressure loss between the outlet of fan and transition zone.
In this study petrographic thin sections, porosity-permeability core data, image logs, Dipole Shear Sonic Imager (DSI) log, Velocity Deviation Log (VDL), Hydraulic Flow Units (HFU) concept, resistivity logs and drilling mud reports were used to identify and analyze micro-fractures in Sarvak Formation.
The purpose of this study is to find a quick method for identification of fractured zones using petrophysical logs, which are available in all wells, and then use the Velocity Deviation Log (VDL) to identify fracture aperture opening and their effects on porosity and permeability.
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Although uncertainties in bead position measurements led to minor discrepancies in the comparison of the velocity fields, the axial and normal velocity deviations exhibited normalized root mean squared deviations (NRMSD) of only 11.32% and 4.74%, respectively.
We used the frame flexibility factor, P-wave velocity porosity and S-wave impedance porosity trends as inputs of Parzen classifier to identify predominate pore type characterized by velocity-deviation log (VDL) in each depth.
A Speed Deviation Ratio (SDR) and an Angle Deviation Ration (ADR) are used to control the deviation of the velocity vector of group members from that of the leader.
The traditional measures were mean COP velocity, standard deviation of COP, range of COP, and percent of available range utilized.
Thirty-six unique alpha and b-value sample points from 5 different gradient waveforms were used to reconstruct perfusion fraction (f), coefficient of diffusion (D), and blood velocity standard deviation (Vb ) maps using a recently proposed IVIM model.
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