-
公开(公告)号:US06418806B1
公开(公告)日:2002-07-16
申请号:US09433953
申请日:1999-11-04
IPC分类号: G01K1116
CPC分类号: G01N25/50
摘要: The fire resistance of components normally subject to a standard flame test is evaluated using low temperature model tests. Reynolds number, Froude number, the pressure ratio of the flame to the surrounding atmosphere are matched in the modelling parameters and account is taken of the Prandtl number. Also, the model flow is controlled so as to match the change of momentum flux ratio in the flow through the burner used in a standard flame test. The method allows testing of easily produced model components at temperatures less than 90° C., with savings of cost and time.
摘要翻译: 通常使用低温模型试验来评估通常进行标准火焰试验的部件的耐火性。 雷诺数,弗劳德数,火焰与周围大气的压力比在建模参数中匹配,并考虑了普朗特数。 此外,模型流量被控制以便匹配在通过标准火焰测试中使用的燃烧器的流动中的动量通量比的变化。 该方法允许在低于90℃的温度下测试易于生产的模型组件,节省成本和时间。
-
公开(公告)号:US09243513B2
公开(公告)日:2016-01-26
申请号:US13267256
申请日:2011-10-06
申请人: Zahid M Hussain , Christopher T J Sheaf , Andrew J Mullender , David MacManus , Brian A Handley
发明人: Zahid M Hussain , Christopher T J Sheaf , Andrew J Mullender , David MacManus , Brian A Handley
摘要: A fluid impingement arrangement comprising a supply manifold and at least one nozzle exit coupled to the supply manifold. The nozzle exit is arranged as a Coanda surface having a restriction and has at least one static pressure tapping that cross-connects two regions of the restriction to induce passive oscillation in a fluid jet passing through the nozzle exit.
摘要翻译: 流体冲击装置,其包括供应歧管和联接到供应歧管的至少一个喷嘴出口。 喷嘴出口被布置为具有限制的柯安达表面,并且具有至少一个静压力攻丝,该静压力攻丝跨过限制的两个区域,以引导通过喷嘴出口的流体射流中的被动振荡。
-
公开(公告)号:US08511056B2
公开(公告)日:2013-08-20
申请号:US12768040
申请日:2010-04-27
CPC分类号: B64C1/1453 , B64C7/02 , F01D25/18 , F02C7/00 , F05D2240/14
摘要: Breather air, containing oil mist, is discharged from a nacelle 4 of a gas turbine engine through an exhaust port 26 at a surface 22 of the nacelle 4. Energized air, at relatively high velocity is discharged from a clean air outlet 28, and forms a barrier between the breather air and the external surface 22, so preventing contamination of the surface 22 by oil deposited from the breather air.
摘要翻译: 包含油雾的通气空气通过机舱4的表面22处的排气口26从燃气轮机的机舱4排出。以较高速度通电的空气从清洁空气出口28排出,形成 在通气空气和外表面22之间形成障碍物,从而防止表面22被从呼吸空气沉积的油污染。
-
-