scholarly journals Another Possible Origin of Temperature and Pressure Gradients across Vane in the Crookes Radiometer

2017 ◽  
Vol 60 (12) ◽  
pp. 471-474 ◽  
Author(s):  
Kazuki DENPOH
Keyword(s):  
Pressure Gradients ◽  
Temperature And Pressure ◽  
Crookes Radiometer

Influence of the Reference State in the SLW Model for Flows With Strong Temperature and Pressure Gradients

2002 ◽  
Author(s):  
T. Badinand ◽  
T. H. Fransson
Keyword(s):  
Radiative Heat ◽  
Reference Temperature ◽  
Pressure Gradients ◽  
Absorption Coefficients ◽  
Local Conditions ◽  
High Temperature And Pressure ◽  
Small Influence ◽  
Temperature And Pressure ◽  
Reference Pressure ◽  
Pressure Changes

Radiative heat transfer in a real case showing high temperature and pressure gradients is calculated with a global model (SLW) with and without re-scaling of the absorption coefficients to the local conditions. Changes in radiative heat flux to the walls for different reference temperatures and reference pressures are studied. Changes in reference pressure are shown to have a small influence compared to changes in reference temperature, except if the pressure is less than 10 bars for a high-pressure case. The use of the scaling does decrease the dependency on the reference condition. The highest differences obtained with strong reference temperature or pressure changes (800K and 30.105 Pa) are of about 15% and 7% respectively. For smaller changes, an uncertainty of 5% could be assumed.

Diurnal Cycle of Thermally Driven Cross-Basin Winds in Arizona’s Meteor Crater

2011 ◽  
Vol 50 (3) ◽  
pp. 729-744 ◽  
Author(s):  
Manuela Lehner ◽  
C. David Whiteman ◽  
Sebastian W. Hoch
Keyword(s):  
Diurnal Cycle ◽  
Inversion Layer ◽  
Crater Floor ◽  
Pressure Gradients ◽  
Pressure Measurements ◽  
Westerly Winds ◽  
Thermally Driven ◽  
Temperature And Pressure ◽  
The Cross

Abstract Cross-basin winds produced by asymmetric insolation of the crater sidewalls occur in Arizona’s Meteor Crater on days with weak background winds. The diurnal cycle of the cross-basin winds is analyzed together with radiation, temperature, and pressure measurements at the crater sidewalls for a 1-month period. The asymmetric irradiation causes horizontal temperature and pressure gradients across the crater basin that drive the cross-basin winds near the crater floor. The horizontal temperature and pressure gradients and wind directions change as the sun moves across the sky, with easterly winds in the morning and westerly winds in the evening. A case study of 12 October 2006 further illustrates the obtained relation between these parameters for an individual day. The occurrence of an elevated cross-basin flow on 23 October 2006 is shown to relate to the presence of an elevated inversion layer.

scholarly journals Flow of liquid He II under large temperature and pressure gradients

1963 ◽  
Vol 21 (1) ◽  
pp. 72-98 ◽  
Author(s):  
P.P Craig ◽  
W.E Keller ◽  
E.F Hammel
Keyword(s):  
Large Temperature ◽  
Pressure Gradients ◽  
Temperature And Pressure

scholarly journals FLOW OF LIQUID He II UNDER LARGE TEMPERATURE AND PRESSURE GRADIENTS

1962 ◽  
Author(s):  
P. P. Craig ◽  
W. E. Keller ◽  
E. F. Hammel, Jr.
Keyword(s):  
Large Temperature ◽  
Pressure Gradients ◽  
Temperature And Pressure

Erguveem Ore Region in the eastern Chukotka Peninsula: An effect of the tectonics of the ore-bearing volcano-structures on composition of the gold-silver mineralization

2021 ◽  
pp. 52-59
Author(s):  
Anton GLUKHOV ◽  
Petr TIKHOMIROV
Keyword(s):  
Sedimentary Rocks ◽  
Tectonic Activity ◽  
Pressure Gradients ◽  
Ore Formation ◽  
Structural Position ◽  
Argillic Alteration ◽  
Gold Silver ◽  
Temperature And Pressure ◽  
Arc Volcano ◽  
Silver Mineralization

The geological and structural position of the Pepenveem and Korrida Au-Ag ore occurrences situated in the East-Chukotka segment of the Okhotsk-Chukotka Volcanogenic Belt (OCVB) was studied. The Pepenveem ore occurrence was characterized by one (volcanogenic) mineralization stage. It is localized within a graben-like monocline composed of Late Cretaceous volcanics. A relatively stable tectonic regime caused rather low temperature and pressure gradients during the ore formation and, consequently, simple mineral composition of the ores and absence of advanced argillic alteration. In contrast, the Korrida ore occurrence was characterized by two (volcanogenic and plutonogenic) mineralization stages. It is localized within a plutonogenic uplift complicated by a regional fault zone. Here, the basement of the volcano-structure, composed of island-arc volcano-sedimentary rocks, was uplifted to the surface by numerous high-angle faults. The here observed extensive development of zoned metasomatic haloes (including advanced argillic alterations), abundance of mineral species, and sharp temperature and pressure gradients could resulted from tectonic activity in a zone of interaction between the plutonic dome and deep-seated regional fault.

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