نتایج جستجو برای: conical flow

تعداد نتایج: 488365  

Journal: :Duke Mathematical Journal 2021

Singularities of the mean curvature flow an embedded surface in R^3 are expected to be modelled on self-shrinkers that compact, cylindrical, or asymptotically conical. In order understand before and after singular time, it is crucial know uniqueness tangent flows at singularity. all dimensions, assuming singularity multiplicity one, compact case has been established by second-named author, cyli...

2006
Mutaz Daas

Handling of bulk solids takes place in gasifiers either at the feed point or at the section of discharging waste and residues of the combustion and gasification. In large gasifiers, significant amounts of waste are expected to be produced, hence a proper gasifier design that allows an effective discharge of the waste from its bottom is essential for a smooth and reliable gasification. Poor gasi...

2009
Vincenzo Greco

We explore the effect of hadronization by partonic coalescence on a “conical” signal at the partonic level. We show that, by transferring partons from a lower to a higher pT , coalescence makes the conical signal stronger and hence less susceptible to thermal smearing, provided the signal is integrated over a large momentum bin and effects such as non-collinearity and a finite Wigner function w...

2004
Sandip K. Chakrabarti Santabrata Das

We analytically study how the behaviour of accretion flows changes when the flow model is varied. We study the transonic properties of the conical flow, a flow of constant height and a flow in vertical equilibrium and show that all these models are basically identical provided the polytropic constant is suitably changed from one model to another. We show that this behaviour is extendible even w...

2015
Lei Xu Wen Han Gaofeng Zheng Dezhi Wu Xiang Wang Daoheng Sun

Initial jet usually has a large primary droplet hanging at flying end before the onset of effective electrospinning. The primary droplet is undesired as its diameter is several orders of magnitude higher than that of electrospun nanofibres. A new method is used to derive micro-scaled initial jet and fine primary droplet under applied small-aperture needle by utilizing low solution flow rate and...

2017
N. Moradian E. Timofeev R. Tahir

Abstract—In this work, startability of the Busemann intake family with weak/strong conical shock, as most efficient intakes, via overboard mass spillage method is theoretically analyzed. Masterix and Candifix codes are used to numerically simulate few models of this type of intake and verify the theoretical results. Portions of the intake corresponding to various flow capture angles are conside...

2011
Borui Zheng Feng Liu Shijun Luo

Duty cycle modulation of the alternating blowing from two opposite facing plasma actuators on the leeward surface near the apex of a cone of semi-apex angle 10o to control the mean lateral force and moment and the flow control mechanism are presented. The pressure distributions over the cone forebody are measured by steady and unsteady pressure-transducers. The experiments are performed in a 3....

2013
Jianlei Wang Huaxing Li Xuanshi Meng Feng Liu Shijun Luo

Duty cycle modulation of the alternate blowing from two opposite facing plasma actuators on the leeward surface near the apex of a cone having semi-apex angle of 10° to control the mean lateral force, moment and the flow control mechanisms are presented. The pressure distributions over the cone forebody are measured using steady pressure-tappings. The flowfields are visualized by a two-dimensio...

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