Preliminary design of a magnetohydrodynamic (MHD) channel for the U. S. S. R. U-25 facility. Final report

Brogan, T.R.; Aframe, A.; Hill, J. C.

doi:10.2172/5066541

1974

DOI: 10.2172/5066541

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Preliminary design of a magnetohydrodynamic (MHD) channel for the U. S. S. R. U-25 facility. Final report

T.R. Brogan¹,

A. Aframe²,

J. C. Hill³

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Cited by 2 publications

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“…2 For this channel, the design calculation shows a blockage of approximately 16% at the entrance of the diffuser. The FluiDyne experiment modeled a small-scale diffuser with operating conditions close to the actual U-25 diffuser design.…”

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confidence: 96%

Subsonic MHD-diffuser performance with high blockage

Doss

1977

Journal of Energy

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Diffuser performance with high blockages is analyzed by a two-dimensional turbulent-flow model. This model is used to analyze the performance of simple two-dimensional, plane-walled diffusers and also of threedimensional diffusers up to and beyond the blockage limits for which previous analytical or experimental data are available. The effects of important design parameters on diffuser performance are investigated. The parameters considered are the blockage, divergence angle, Mach number, aspect ratio, and wall-to-freest ream temperature ratio. The first two parameters affect the diffuser performance significantly; the other parameters influence the performance only slightly. Results obtained from the subject model agree reasonably well with the available experimental data. The diffuser design of the U-25 facility is analyzed and the analysis predicts a pressure recovery of 0.49, which agrees very well with the measured experimental value of approximately 0.48, obtained from a small-scale model. Nomenclature= geometric cross-sectional area of diffuser, A = H> W = effective flow cross-sectional area of diffuser, A ef t=(H-2d H *)(W-2d w *) = aspect ratio , ^ = HI W -diffuser blockage parameter, B s-J -(A cff /A) = static pressure recovery coefficient, Cp -(Pexit ~ Anlet V(Po ~ P ) inlet > where p 0 is evaluated at the centerline of diffuser = geometrical height of diffuser (in the y direction) = length along the diffuser = Mach number (at the diffuser centerline) = mass flow rate -static pressure = longitudinal velocity component -geometrical width of diffuser (in the z direction) = physical boundary-layer thickness = physical boundary-layer displacement thickness, A A eff

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confidence: 96%

Subsonic MHD-diffuser performance with high blockage

Doss

1977

Journal of Energy

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“…Use of the combination of a marker that appears early (myoglobin) and either Creatine Kinase CK-MB isoenzyme (CK-MB) or cardiac troponin I (TnI) may facilitate rapid exclusion of AMI and enable discharge of patients who do not require prolonged observation 4 . Myoglobin is advantageous because it appears 1 to 2 hours after symptom onset, and studies have demonstrated its high sensitivity for detection of AMI within the first few hours after presentation (4) . However, use of myoglobin alone has significant limitations.…”

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confidence: 99%

Evaluation of combined biochemical markers in the diagnosis of acute coronary syndrome in Nineveh governorate

Al-Mukhtar¹,

Ahmad²

2012

Iraqi J. Pharm.

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Preliminary design of a magnetohydrodynamic (MHD) channel for the U. S. S. R. U-25 facility. Final report

Cited by 2 publications

References 0 publications

Subsonic MHD-diffuser performance with high blockage

Subsonic MHD-diffuser performance with high blockage

Evaluation of combined biochemical markers in the diagnosis of acute coronary syndrome in Nineveh governorate

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