Document Details
Title:
AIR FLOW PATTERNS AND HEAT TRANSFER WITHIN THE RESPIRATORY TRACT ANEW METHOD FOR EXPERIMENTAL STUDIES ON MODELS
Author(s):
Document Location:
Location - DOE/NNSA NUCLEAR TESTING ARCHIVE Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - NTA@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1961 Dec 31
Declassification Status:
Never classified
Document Pages:
0014
Accession Number:
NV0015295
OpenNet Entry Date:
1994 Aug 26
OpenNet Modified Date:
2003 Sep 18
Description/Abstract:
THE AUTHORS HAVE WORKED OUT AN EXPERIMENTAL METHOD WHICH MAKES IT POSS IBLE TO DETERMINE AIR FLOW PATTERNS IN MIDELS OF THE RESPIRATORY TRACT . THE METHOD IS BASED ON THE CLOSE RELATIONSHIP BETWEEN HEAT TRANSFER AND PRESSURE DROP CONDITIONS WHICH OCCUR IN A TUBE WITH A WARM INNER S URFACE WHEN AIR IS BLOWN OR SUCKED THROUGH IT. THE AIR TEMPERATURES BE FORE ENTERING AND AFTER LEAVING A TUBE OF TRACHEAL DIMENSIONS ARE DETE RMINED AND THE HEAT TRANSFERRED TO THE PASSING AIR IS COMPUTED. THUS H EAT IS USED AS A TRACER. AS A RESULT OF FRICTION TO FLOW, AN AERODYNAM IC BOUNDARY LAYER IS BUILT UP. IT IS STATED THAT THE SHAPE OF THIS LAY ER DETERMINES THE ACTUAL DEGREE OF HEAT TRANSFER BETWEEN THE AIRWAY MU COUS MEMBRANES AND THE RESPIRED AIR. THE HITHERTO UNKNOWN BIOLOGICAL I MPORTANCE OF VARIATIONS IN THE BOUNDARY LAYER WITHIN DIFFERENT PARTS O F THE RESPIRATORY TRACT IS BRIEFLY DISCUSSED.