Search Results

1 - 10 of 113 items :

  • Materials Sciences, other x
Clear All
Quantitative Visualisation of Compressible Flows

, “Investigation of flow separation on a supercritical airfoil”, Journal of Aircraft, No. 26, pp. 1032-1039. [5] Adrian R.J., 1991, “Particle-imaging techniques for experimental fluid mechanics”, Annual Review of Fluid Mechanics, No. 23, pp. 261-304. [6] Wilert C.E., Gharib M., 1991, “Digital particle image velocimetry”, Experiments in Fluids, No. 10, pp. 181-193. [7] Parsad A.K., 2000, “Stereoscopic particle image velocimetry”, Experiments in Fluids, No. 29, pp. 103-116. [8] Scarano F., 2013, “Tomographic PIV: principles and practice”, Measurement

Open access
Flow Control on Helicopter-Rotor Blades Via Active Gurney Flap

BIBLIOGRAPHY [1] Gardner A.D., Richter K., Rosemann H., Numerical Investigation of Air Jets for Dynamic Stall Control on the OA209 Airfoil, Proceedings of ERF 2010, Paris, 7-9 September 2010. [2] Heine, B., Mulleners, K., Gardner, A., Mai, H., On the effects of leading edge vortex generators on an OA209 airfoil, ODAS2009, 2009. [3] Feszty D., Gillies E.A., Vezza M., “Alleviation of Airfoil Dynamic Stall Moments via Trailing-Edge Flap Flow Control”, AIAA Journal, Vol. 42, No. 1 (2004), pp. 17-25. [4] Wang, J.J., Li Y.C., Choi K-S., Gurney

Open access
Numerical Study of an Isothermal Slush Flow for Aerospace Propulsion Applications

Congress , Adelaide, (2017). [4] J. Ishimoto and R. Ono, “Numerical study of the two-phase flow characteristics of slush nitrogen,” Cryogenics, vol. 45, no. 4, pp. 304-316, 2005. [5] P. Crivellari, L. del Monte and F. Gamma, “Computational fluidynamics of hydrogen for aerospace vehicles,” in 35th Joint Propulsion Conference , Los Angeles, 1999. [6] K. Ohira, A. Ota, Y. Mukai and T. Husono, “Numerical study of flow and heat-transfer characteristics of cryogenic slush fluid in a horizontal circular pipe (SLUSH-3D),” Cryogenics, vol. 52, no. 7, pp

Open access
Measuring Stand Tests of a Michell-Banki Waterturbine Prototype, Performedunder Natural Conditions

, “Optymalizacja konstrukcji i osiągów turbiny wodnej przy wykorzystaniu metod obliczeniowej mechaniki płynów CFD” („Optimization of a water turbine construction and performance using methods computational fluid mechanics CFD”), Transactions of the Institute of Aviation, No. 202, pp. 180-187. [5] Zalewski W., 2010, “Analiza przepływu przez model turbiny wodnej typu Michell-Banki. Dodatek B. Analiza wariantu z uproszczonym kanałem dolotowym i poziomym kanałem wylotowym dla spadków wody 1000, 1500 i 2000 mm” („Flow analysis by a Michell-Bank water turbine model. Appendix B

Open access
Flight Tests of Turboprop Engine with Reverse Air Intake System

Generator Rotational Speed N2 – Propeller Shaft Rotational Speed OAT – Outside Air Temperature OFF – separator flap position without flow separation ON – separator flap position for flow separation PIC – Pilot In Command PBS – První Brněnská Strojírna Velká Bíteš rpm – revolutions per minute, propeller rotation speed unit TAS – True Air Speed TOP – Take-Off Power TORQ – Torque at shaft VLE – maximum speed with landing gear extended VS1 – stall velocity with flaps and gear retracted REFERENCES [1] Guła P., Iwaniuk A., 2016, “Report on

Open access
Investigation of Flow Field Around the Pointed Cowl Air Intake at Mach 2.0

–105, Mar. 2009. [4] D. Mahapatra and G. Jagadeesh, “Experimental Investigation of Cowl Shape and Location on Intake Characteristics at Hypersonic Mach Number,” Shock Waves , pp. 607–612, 2009. [5] T. J. Goldberg and J. N. Heffner, “Starting Phenomena for Hypersonic Intakes With Thick Boundary Layers at Mach 6,” NASA Technical note, Washington, D.C., NASA TN D -6280, August 1971. [6] J. M. Cubbage, “Effect of Nose Bluntness and Controlled Roughness on the Flow on Two

Open access
Structural and surface analysis of chemical vapor deposited boron doped aluminum nitride thin film on aluminum substrates


Chemical vapor deposition (CVD) process was conducted for synthesis of boron (B) doped aluminum nitride (B-AlN) thin films on aluminum (Al) substrates. To prevent melting of the Al substrates, film deposition was carried out at 500 °C using tert-buthylamine (tBuNH2) solution delivered through a bubbler as a nitrogen source instead of ammonia gas (NH3). B-AlN thin films were prepared from three precursors at changing process parameters (gas mixture ratio). X-ray diffraction (XRD) technique and atomic force microscope (AFM) were used to investigate the structural and surface properties of B-AlN thin films on Al substrates. The prepared thin films were polycrystalline and composed of mixed phases {cubic (1 1 1) and hexagonal (1 0 0)} of AlN and BN with different orientations. Intensive AlN peak of high intensity was observed for the film deposited at a flow rate of the total gas mixture of 25 sccm. As the total gas mixture flow decreased from 60 sccm to 25 sccm, the crystallite size of AlN phase increased and the dislocation density decreased. Reduced surface roughness (10.4 nm) was detected by AFM for B-AlN thin film deposited on Al substrate using the lowest flow rate (25 sccm) of the total gas mixture.

Open access
Effect of macromolecular mass transport in microgravity protein crystallization

determinations. Data and information obtained from crystallographic investigations are important for macromolecular engineering to optimize biomolecules for various applications in biomedical research. Macromolecular transport in crystallization processes has been shown to directly affect crystal quality ( García-Ruiz et al., 2016 ; McPherson et al., 1999 ; Vekilov, 1999 ). Gravity-dependent flow effects, including convection and sedimentation, affect the crystal growth processes on earth ( Lee and Chernov, 2002 ; Otálora et al., 2001 ; Wilcox, 1983 ). Density

Open access
Challenges of ERAU’s First Suborbital Flight Aboard Blue Origin’s New Shepard M7 for the Cell Research Experiment In Microgravity (CRExIM)

observed functional differences between the flown T-cells and the ground controls. Our scientific experiments and data analyses were conducted at Dr. Wargovich’s laboratory at the UTHSCSA using the flow cytometry core facility. In addition, we have performed a complex cytokine expression analysis using the Invitrogen Mouse Custom ProcartaPlex 5-plex. All scientific data are currently being incorporated in a manuscript, which will be published in the spring of 2019. The impact of this research is to expand our understanding of T-cell behavior and functional capacity under

Open access
Investigation of Murine T-Cells and Cancer Cells under Thermal Stressors and 2D Slow Rotating System Effects as a Testbed for Suborbital Flights

activated mouse T-cells using two commonly used interleukins, IL-2 and IL-12. Our findings demonstrate that adding IL-2 and IL-12 to T-cell cultures provides a simple way to improve/extend the survivability of cells. In our T-cell experiment study, we observed the formation of aggregates after a few days when using a slow rotating device. The slow rotating allows for slight fluid flow around the cells, which helps increase multicellular geometrical structures or aggregates. In addition to T-cells, we also assessed the survivability of different types of cancer cells

Open access