Results 41 to 50 of about 309 (132)
Hydrological Processes, Volume 38, Issue 4, April 2024.We collected soil water percolation and nutrient flux at 60 cm depth to understand variability across topographic, soil texture and seasonal gradients within the remote Central Amazon region of Brazil. Main findings indicate percolation volume and solute concentration generally increase with decreasing elevation and clay content.
Jardel Ramos Rodrigues +13 more
wiley +1 more source
Prediction of total pressure characteristics in the settling chamber of a supersonic blowdown wind tunnel [PDF]
The Aeronautical Journal, 2011 AbstractOccurrence of transient starting and stopping loads during tests at high Mach numbers is one of the major problems in intermittent blowdown wind tunnels. It is believed that in order to overcome this problem, the wind tunnel could be started at a low Mach number and low stagnation pressure; the desired high Mach number condition could be ...
G. K. Suryanarayana, S. R. Bhoi
openaire +1 more source
Spectral Energy of High-Speed Over-Expanded Nozzle Flows at Different Pressure Ratios
EnergiesThis paper addresses the long-standing question of understanding the origin and evolution of low-frequency unsteadiness interactions associated with shock waves impinging on a turbulent boundary layer in transonic flow (Mach: 1.1 to 1.3).
Manish Tripathi +5 more
doaj +1 more source
CONTROL OF REYNOLDS NUMBER IN A HIGH SPEED WIND TUNNEL. doi: 10.5028/jatm.2009.01016977
Journal of Aerospace Technology and Management, 2011 A conceptual control model for the Reynolds number test based on isentropic relations was established for the supersonic wind tunnel. Comparison of the system response of the model simulation and the actual wind tunnel test data was made to design the ...
Maurício G. Silva +2 more
doaj
Blowdown sequence-sequential logic display for the N.A.L.4'*4' trisonic wind tunnel
, 1975 This note describes the design of the quot;Sequential Logic Display Consolequot; which monitors the sequence of events during a tunnel run. This facility was incorporated as an additional feature of the existing blowdown sequence logic system of the N.A ...
Srikantan, KV, Mahalingam, V
core
Application of Radial-Splitters for Improved wide-angle diffuser performance in blowdown tunnel
, 1976 Severe flow separation in the 15:1 area-ratio, 38 degree total angle conical diffuse preceding the settling-chamber of an intermittent blowdown wind tunnel was eliminated by the use of a novel radial-splitter arrangement. As a consequence, the operating
Seshadri, SN +3 more
core +1 more source
Pressure Sensitive Paint measurements in NAL 1.2m blowdown wind tunnel
, 2003 A methodology to correct for the temperature effects of pressure sensitive paint data in a blowdown wind tunnel has been suggested. PSP measurements using Optrod-B1 paint were made on an aircraft model instrumented with thermocouples and conventional ...
Channa Raju, -, Viswanath, PR
core
Prediction of total pressure characteristics in the settling chamber of a supersonic blowdown wind tunnel [PDF]
, 2008 In the design of control system of a wind tunnel, it is important to understand the importance of operations of mechanical systems in order to ensure that any emergencies that may arise during the running of the wind tunnel are properly handled by the ...
Bhoi, SR, Suryanarayana, GK
core
, 1999 Occurrence of very high starting and stopping transient loads in intermittent blowdown wind tunnels operating at a high supersonic Mach numbers is a well known phenomenon.
Manimekalai, B +2 more
core
Shock loss measurements in non-ideal supersonic flows of organic vapors. [PDF]
Exp Fluids, 2022 Conti CC +3 more
europepmc +1 more source