Results 281 to 290 of about 2,318,055 (330)

Experimental and numerical studies on the heat transfer improvement of a latent heat storage unit using gradient tree-shaped fins

International Journal of Heat and Mass Transfer, 2022
To improve the thermal performance of horizontal latent heat storage (LHS) units, this study investigates two innovative LHS units using uniform and gradient tree-shaped fins.
Yongping Huang, Dongcheng Cao, Dongke Sun, Xiangdong Liu   +3 more
semanticscholar   +1 more source

Automated interpretation of horizontal magnetic gradient profile data

Geophysics, 1992
Abstract A new technique has been developed to estimate the vertical magnetic gradient (G z ) along a profile from measurements of the two orthogonal horizontal magnetic gradients (G x and G y ). In addition, a means of identifying two-dimensional anomaly sources and the angle of the structure relative to the profile direction is ...
Marcotte, D., Hardwick, C. D., Nelson, J. B.   +2 more
openaire   +2 more sources

Generation of vertical–horizontal and horizontal–horizontal gravity gradients using stochastically modified integral estimators

Advances in Space Research, 2011
The Earth’s gravity field modelling is an ill-posed problem having a sensitive solution to the error of data. Satellite gravity gradiometry (SGG) is a space technique to measure the second-order derivatives of geopotential for modelling this field, but the measurements should be validated prior to use.
Mehdi Eshagh, Mohsen Romeshkani
openaire   +1 more source

Double-diffusive interleaving on horizontal gradients

Journal of Fluid Mechanics, 2006
Results are presented from laboratory experiments on lateral intrusive flows driven by horizontal gradients of properties in double-diffusive systems. These are variations on the classical experiments in which salt stratified fluid was separated from a sugar stratified fluid by a removable barrier.
openaire   +1 more source

Thermal Instability of Flows with a Horizontal Temperature Gradient

Physical Review Letters, 1997
The effect of horizontal heat advection on the thermal instability is studied for a general class of horizontal flows comprising forced and temperature-induced flow components as well as a possible net heat transport. The instability is usually triggered by an unstable layer of height ${h}_{u}$, which is caused by the nonlinear vertical temperature ...
Olaf Stiller, Wolfgang Schöpf
openaire   +1 more source

Horizontal Salinity Gradient Effects in Apalachicola Bay

Journal of Waterway, Port, Coastal, and Ocean Engineering, 1991
This research demonstrates that horizontal density gradients approximated by salinity gradient represent an additional forcing term in the equations of motion, which have a significant effect in certain portions of a well-mixed estuary. The horizontal density gradient terms have been added to a two-dimensional depth-averaged hydrodynamic and salinity ...
Kang‐Ren Jin, Donald C. Raney
openaire   +1 more source

Bifurcation of Dynamic Soaring at Horizontal Wind Gradient

2019 Chinese Control Conference (CCC), 2019
Dynamic soaring is a technique that seabirds like albatrosses use uneven natural winds in the atmosphere to extend the range without flapping the wings. To reveal the dynamic soaring mechanics, the equilibrium curve composed of equilibrium points are found in the model at the horizontal wind gradient.
Shangqiu Shan, Senlin Wang, Renwu Sun, Kun Hou   +3 more
openaire   +1 more source

Horizontal wind fields and pressure gradient

Quarterly Journal of the Royal Meteorological Society, 1948
AbstractThe method adopted in deriving the geostrophic and gradient wind relations, that of specifying a wind field and deriving the pressure field from it, is extended to find pressure fields for other flow patterns. The motion is referred to contours of isobaric surfaces and the analysis is limited to motion in terms of Cartesian co‐ordinates. Simple
openaire   +1 more source

The Horizontal Temperature Gradient and the Increase of Wind with Height

Nature, 1917
IT has been known for some time past that from heights of about 1 to 9 km. the temperature is higher in the high pressure than in the low pressure area, and also that in general the wird, and especially the west wind, increases with height. The following simple proof shows that these two observational facts are not independent of each other, but that ...
openaire   +2 more sources

Environmental gradients and the horizontal distribution of microcrustaceans in lakes

Freshwater Biology, 1998
1. The assemblage of suspension‐feeding microcrustaceans in lakes changes along a habitat gradient from nearshore to offshore. This gradient of microcrustaceans was explored in relation to differences in macrophytes and the associated changes in water chemistry, food resources and types of predators.2.
Elizabeth A. Smiley, Alan J. Tessier
openaire   +1 more source