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Showing 1 to 15 of 15 for “"pressure jump"”.
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The kinetics of protein conformational relaxation in sperm whale myoglobin following a pressure jump
"The temperature, T, (140 K to 320 K) and pressure, P, (1 00 kPa to 100 MPa) dependence of the CO stretching bands in Sperm Whale Myoglobin, Mb, in various solvents has been studied with FTIR spectroscopy. The data are consistent with hierarchically ordered conformational substates, csn' (nth …
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Rotor/Fuselage Unsteady Interactional Aerodynamics: A New Computational Model
… is achieved using a newly developed unsteady pressure jump boundary condition in the Navier-Stokes model. The new unsteady pressure jump boundary condition models each rotor blade as a moving pressure jump which travels around the rotor azimuth =and is applied between two adjacent planes in a …
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Mitigating Engine Unstart in Scramjets with Porous Bleeders
… of porous bleeder design parameters such as pressure jump coefficient and bleeder size on isolator effectiveness and unstart prevention was evaluated. Results indicated that porous bleeders delayed flow separation and reduced adverse pressure gradients, thereby enhancing isolator performance. …
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Computational investigations of protein dynamics and its implications for biological functions
… mutants, λ*YG and λ*YA, we study pressure effect on the protein dynamics. A short refolding time of 2 μs was reported for λ*YG in pressure-jump experiments. To investigate this pressure-jump induced fast folding behavior, MD simulations of more than 35 μs are carried out on the …
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NMR study of the unfolding of ribonuclease A, and dynamical studies of liquids in confined geometries
The cold, heat, and pressure unfolding of RNase A has been studied by 1D and 2D $\sp1$H NMR spectroscopy, spin-lattice relaxation time measurements, and the pressure-jump hydrogen-exchange method. It was found that the pressure denatured states of RNase A display some characteristics of a molten …
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Aerodynamics of lifting surfaces in propeller slipstreams
… line across which the nondimensionalized pressure jump was varied from 3.4 to 13.6. The aerodynamic performance was obtained for the airfoil in configurations with varying horizontal and vertical distance between the actuator line center and airfoil leading edge as well as different …
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Protein folding in living cells and under pressure
… the kinetics of fast-folding reactions following pressure-jump perturbation and pair experiment with molecular dynamics simulations. The first chapter is a review of the effects of pressure on the structure of biomolecules as well as a brief literature review of pressure-probed protein folding …
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Aerodynamic inverse design of transonic turbomachinery cascades
… this loading by imposing the appropriate pressure jump across the blades and satisfying the blade boundary condition, the latter implies that the flow is tangent to the blade surfaces. This inverse design method is implemented using a cell-vertex finite volume method which solves the Euler …
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Temperature- and pressure-induced protein dynamics from microseconds to minutes
… microseconds to minutes using temperature and pressure as perturbation variables. Chapter 1 compares recent progress in the field of fast protein folding from experimental and computational sides. Chapters 2--5 are dedicated to unveiling the mechanism of folding of a model protein called …
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Local and global numerical analysis of a porous screen in free-stream flow
… to the need for a better understanding of the pressure jump across the screen.
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Oxyanion Adsorption by Iron and Ruthenium Oxides: A Macroscopic, Spectroscopic, and Kinetic Investigation
… x-ray absorption fine structure spectroscopy and Pressure-jump relaxation studies indicates arsenate is specifically adsorbed the ruthenium oxide Chromate adsorption on ruthenium oxides was investigated as a function of pH and chromate solution concentration. Macroscopic adsorption studies and …
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Vibrational energy transfer in condensed high explosives: Nitromethane
… following an ultrafast temperature and pressure jump, are used to study vibrational energy relaxation and multiphonon up-pumping in a high explosive nitromethane (NM). The relationships between these energy transfer processes and shock wave-induced initiation to detonation are discussed. …
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A Higher-Order VOF Interface Reconstruction Scheme for Non-Orthogonal Structured Grids - with Application to Surface Tension Modelling
… accuracy is demonstrated for the Laplace pressure jump in the simulation of a 2D stationary bubble with a high liquid-gas density ratio. A significant reduction in parasitic currents is demonstrated. Lastly, second-order accuracy is achieved when computing the frequency of a 2D inviscid …
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A moving mesh method for non-isothermal multiphase flows
… the interfacial tension and the associated pressure jump are exactly balanced numerically and thus the static Laplace solution exists in our method. The stability of this solution is examined numerically. The amplitude of the dimensionless spurious currents is found to be around $10^{−15}$ …
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Sidewall effects in compression corner shock-wave/boundary-layer interactions
… schlieren photography, oil-flow visualisation, Pressure Sensitive Paint, and Laser Doppler Velocimetry. The flows are all separated in the baseline case. The Mach 2.5 and 3.5 baseline cases both show quasi-2D separations for the majority of the tunnel span, while the Mach 1.5 baseline shows …