作者: BOON 時間: 2025-3-21 22:25
Interference and Transient Effects on Compression Ramp Flows at Hypersonic Mach Numbersflow adjustment have been examined, and the development of criteria to predict separated flow establishment times discussed. During the initial experiments, nozzle exit compression waves were found to be a corrupting influence. Methods of detecting this interference, and its effects, have been assessed.作者: 名詞 時間: 2025-3-22 04:26
Effects of Leading-Edge Bluntness on Control Flap Effectiveness at Hypersonic Speedsin a hypersonic gun tunnel facility at .. = 8.2 and ../. = 9.0 × 10.. The flow structure over a low aspect ratio flat plate with a full span trailing edge flap has been investigated using high speed Schlieren photography as well as surface pressure and heat transfer measurements.作者: Ovulation 時間: 2025-3-22 04:44
The Boundary Layer on a Sharp Cone in High-Enthalpy Flowaminar layer, heat flux levels are higher in air than in nitrogen because of a larger heat release from oxygen recombination at the wall. By varying the specific reservoir enthalpy in air and N., and from measurements in CO., it is found that real-gas effects stabilize the boundary layer.作者: 責(zé)問 時間: 2025-3-22 09:54 作者: 聯(lián)想 時間: 2025-3-22 16:36 作者: Frequency-Range 時間: 2025-3-22 20:55
978-3-642-78831-4Springer-Verlag Berlin Heidelberg 1995作者: patriot 時間: 2025-3-22 21:35
Shock Tube Investigations of Combustion Phenomena in Supersonic FlowsA survey is given of recent combustion dynamics research using shock tubes. There are three different fields where phenomena in supersonic gas flows resulting from chemical heat release are of particular interest: 作者: 空氣傳播 時間: 2025-3-23 02:40 作者: 和平主義者 時間: 2025-3-23 07:03
A Life with Shock Waves (Ernst Mach Memorial Lecture)iscovered, which delays BL separation. Shock focusing, amplification, and stability were investigated; a “shock nozzle” was devised, and also an improved version of the spiral contraction. Recently, the author joined Prof. Raymond Brun’s Marseille team working on the development of a new Stalker-tub作者: 嬉耍 時間: 2025-3-23 13:37
Computational Analysis on Generic Forms in European Hypersonic Facilities: Standard Model Electre ansymmetric generic form provided also the possibility to study the influence of real gas effects on flap efficiency and heating. An increase in flap efficiency resulting from the shrinking of the separated boundary layer region in front of the flap combined with an increase of the pressure recovery o作者: Cubicle 時間: 2025-3-23 13:56
Shock Wave Interactions in Hypervelocity Flowas effects are seen to increase the range of shock impingement points for which enhanced heating occurs. They also reduce the type IV (Edney 1968 a,b) interaction supersonic jet width and influence the type II—III transition process.作者: dura-mater 時間: 2025-3-23 22:05 作者: Flirtatious 時間: 2025-3-24 01:38 作者: 束以馬具 時間: 2025-3-24 06:16
ution of stable high-pressure cells in the subtropics (e.g. Sahara and Arabian deserts); (2) the continentality, based on the distance to the oceans that constitute the main source of moisture (e.g. deserts in Central Asia); (3) orographic barriers that block the path of weather fronts creating rain作者: 巫婆 時間: 2025-3-24 09:03
John L. Stollery Rivers transport approximately 75,000 million tonnes of material each year, of which 20,000 million tonnes reaches the sea, around 80 % in solid form and 20 % in solution. Fluvial systems are frequently the main agents involved in landscape evolution and exert a prime influence on other interrelate作者: 華而不實(shí) 時間: 2025-3-24 14:44
Lucien Z. Dumitrescusoil, and time. This chapter is mostly illustrated with photography because the small-scale details of the weathering process are difficult to capture with images from space. Nevertheless, some large-scale weathering forms may well be detected from space as pictures of exfoliation patterns or corest作者: 神圣不可 時間: 2025-3-24 17:36 作者: narcissism 時間: 2025-3-24 22:17
normous erosive forces due to their weight and their ability to transport and use rock debris of different sizes that are frozen at the glacier’s base. Rock debris scratches the hard rock at the valley floor and creates typical striae or striations as well as polishing of rock surfaces where finer p作者: Saline 時間: 2025-3-25 02:12 作者: 減去 時間: 2025-3-25 06:37
D. Kumar,J. L. Stollery example if you drop an iron nail on the floor and pick it up with a small bar magnet from a child’s toy. But gaze out of the window: Gravity is shaping the landscape everywhere around us when it exceeds the cohesive strength of slope materials and friction and as a consequence downslope movements o作者: 條街道往前推 時間: 2025-3-25 10:30 作者: 細(xì)胞 時間: 2025-3-25 14:51 作者: 笨拙處理 時間: 2025-3-25 19:23
S. Kortz,G. Eitelberg,T. J. McIntyreof customary practices which certainly varied from county to county and sometimes varied within counties. Custom and common law had their limitations, however, in that initially they could not compensate the outgoing tenant for any improvements, nor did they allow him to remove any fixtures he might作者: Genistein 時間: 2025-3-25 20:46
D. R. Buttsworth,R. G. Morgann of the long lease. Protection for long lessees varies from other private sector tenants in that there is no restriction on premiums (hardly surprising since these leases exchange hands for sums of money which reflect their market value). There is also no rent control, although with the low rents i作者: legacy 時間: 2025-3-26 03:31 作者: agenda 時間: 2025-3-26 04:30 作者: labile 時間: 2025-3-26 10:45 作者: 懲罰 時間: 2025-3-26 13:07 作者: right-atrium 時間: 2025-3-26 18:37
A. Gülhanof customary practices which certainly varied from county to county and sometimes varied within counties. Custom and common law had their limitations, however, in that initially they could not compensate the outgoing tenant for any improvements, nor did they allow him to remove any fixtures he might作者: Synthesize 時間: 2025-3-26 22:02
G. Smeetsenic processes (those within the Earth′s crust), called tectonics. These images and the processes that they document show that continents are shifting, mountains are uplifting, and ocean bottoms may sink deeper978-94-024-0625-2978-94-017-9713-9作者: cutlery 時間: 2025-3-27 01:33
Conference proceedings 1995res of the 19th International Symposium on Shock Waves held in Marseille in 1993. They are published in four topical volumes, each containing papers on related topics, and preceded by an overview written by a leading international expert. The volumes may be purchased independently.作者: 充氣女 時間: 2025-3-27 07:39 作者: 腐蝕 時間: 2025-3-27 09:28 作者: Pruritus 時間: 2025-3-27 16:29 作者: coddle 時間: 2025-3-27 19:13 作者: Console 時間: 2025-3-28 01:00
Interaction of Thermal Protection Materials with the High-Enthalpy Flow of the Arc-Heated Wind Tunneum processes in the nozzle flow coupled with frozen or equilibrium shock solutions. Spectroscopic analyses of the material composition of the samples tested in the air atmosphere indicate the development of a protective SiO.-layer.作者: Blazon 時間: 2025-3-28 02:49 作者: 頭腦冷靜 時間: 2025-3-28 08:31
A Life with Shock Waves (Ernst Mach Memorial Lecture)rst motivation was to use the shock tube as a short-duration aerodynamic test facility, a goal to be belately achieved, with results on e.g. hypersonic flow around flared bodies, or transonic motion of permeable airfoils. In the meantime, two shock tubes and a large facility, combining the shock- an作者: perpetual 時間: 2025-3-28 13:16
Computational Analysis on Generic Forms in European Hypersonic Facilities: Standard Model Electre anElectre whose purpose is to serve as a standard model in hypersonic wind tunnel testing. The second form is a hyperboloid flare for the study of the separation and reattachment of the boundary layer in front of a deflected control flap. The Electre standard model does not only serve to improve the f作者: 漂亮才會豪華 時間: 2025-3-28 17:20 作者: DRILL 時間: 2025-3-28 20:46
Effects of Leading-Edge Bluntness on Control Flap Effectiveness at Hypersonic Speedsin a hypersonic gun tunnel facility at .. = 8.2 and ../. = 9.0 × 10.. The flow structure over a low aspect ratio flat plate with a full span trailing edge flap has been investigated using high speed Schlieren photography as well as surface pressure and heat transfer measurements.作者: 一罵死割除 時間: 2025-3-28 23:17
Measuring the Effect of Nose Bluntness on Drag of a Cone in a Hypervelocity Shock Tunnel Facilitynd hypervelocity (flight speed & 5 km/s) regime. Experiments were performed in a free-piston driver shock tunnel facility. Drag measurements were made using the de convolution force balance (Sanderson and Simmons 1991) for measuring drag in hypervelocity impulse facilities where test times may be of作者: Nebulizer 時間: 2025-3-29 05:09 作者: 商店街 時間: 2025-3-29 10:07 作者: 揭穿真相 時間: 2025-3-29 13:43 作者: 輕浮思想 時間: 2025-3-29 15:40 作者: IVORY 時間: 2025-3-29 23:46
Oblique Shock Interactions with Mach Number Distributions-Hugoniot shock jump conditions. This equation essentially describes the shape an oblique shock assumes as it traverses a region of varying Mach number. Because the analysis also provides a flow solution downstream of the shock, it is seen as a particularly useful tool in the study of shock wave — m作者: 遭受 時間: 2025-3-30 00:34
Strength of Characteristics at a Curved Shock Wavee gradient and streamline curvature are used to determine the relative strengths (the reflection coefficient) of characteristics just downstream of a two-dimensional curved shock wave. It is shown that the characteristics’ strengths are a complex function of the specific heat ratio, the upstream Mac作者: Enthralling 時間: 2025-3-30 06:55
Blunt Body Flow — The Transonic Regionthe downstream surface of the shock wave and the limiting characteristics. Using curved shock theory, we establish the conditions under which the shock surface is (type I), or is not (type II), a boundary of the transonic region. It is found that the existence of type I or type II flow is determined作者: BORE 時間: 2025-3-30 10:08
Shock Tube Application to the Study of Compressible Turbulent Boundary Layer with Mass Injectiont aims to gain further understanding of the film cooling in the compressible flow regime. The test model is a flat plate equipped with a 2D 30° injection slot. Air is used for both driver and driven gases. The injection flow is measured by using the slot as a flow measuring device. Heat transfer dat作者: SOBER 時間: 2025-3-30 12:39 作者: 血友病 時間: 2025-3-30 19:56 作者: cortex 時間: 2025-3-30 22:33
Blunt Body Flow — The Transonic Region(γ — 1) then only type I is realized. When the curvature ratio is between 1 and ?2/(γ — 1) the appearance of type I or type II is determined by the free stream Mach number. With proper choice of curvatures the results apply to general, three dimensional, shock waves as well.作者: 公司 時間: 2025-3-31 03:14
Shock Tube Application to the Study of Compressible Turbulent Boundary Layer with Mass Injectiontzger et al. (1968, 1971)(at Mach 0.03) and Forth et al. (1986) (at Mach 0.55). This comparison revealed a possible Mach number effect on film cooling that has never been addressed before. We use the Prandtl-Glauert formula to model this effect. The agreement is good within measurement uncertainty.作者: Jacket 時間: 2025-3-31 05:53
Conference proceedings 1995agation in various media, industrial and medical applications of shock waves, and shock-tube technology. This series contains all the papers and lectures of the 19th International Symposium on Shock Waves held in Marseille in 1993. They are published in four topical volumes, each containing papers o作者: 切碎 時間: 2025-3-31 13:16
shock propagation in various media, industrial and medical applications of shock waves, and shock-tube technology. This series contains all the papers and lectures of the 19th International Symposium on Shock Waves held in Marseille in 1993. They are published in four topical volumes, each containin作者: 心痛 時間: 2025-3-31 15:56 作者: Seminar 時間: 2025-3-31 20:16 作者: Baffle 時間: 2025-3-31 22:24
John L. Stolleryrms cover an enormous range of dimensions, from small features like rills to major continental-scale morpho-hydrological units like large rivers and their drainage basins. The River Nile is 6,650 km long and the drainage basin of the Amazon River covers 7,050,000 km., an area almost as big as Austra作者: inconceivable 時間: 2025-4-1 04:01
Lucien Z. Dumitrescuarting with the most important process: weathering. Weathering takes place through a combination of both mechanical and chemical means. We have all experienced the results of weathering in day-to-day life whether you stumble over a tree root that broke the asphalt on your morning run or you hear the
