Apparatus and methods for airflow testing, especially for air testing of gas turbine components on an airflow test bench. Various embodiments of the present invention include the use of a flow-stabilizing member downstream of the component being tested. Since the flow through or over the component is subsonic, a flow-stabilizing member placed down stream of the component can have an effect on the flow conditions in or around the component being tested. In one embodiment, the flow-stabilizing mem…

The flow straightener is used in piping for papermaking machines and employs ribs which are angled at the front edge to a plane perpendicular to the flow path to avoid fiber accumulations thereon. The ribs can be disposed in tube bends or elbows and can be used in circular or rectangular pipes.

An improved flow-no-flow tester has two major advantages over its predecessor. First, it eliminates the need to invert the test cell after the compaction phase, thereby eliminating the possibility that failure of the compacted sample will occur before the failure load-measuring portion of the test can be done. Second, the improved tester determines the compaction load by measuring the force exerted by the sample against an upper piston, while a compressive force is applied to the sample by a low…

An instrument for measuring certain physical properties of a sample of particulate material so that the flow characteristics of the material can be determined includes an improved compaction assembly having an upper piston that is surrounded by a retractable sleeve and further includes an improved test cell having cylindrical walls, having a failure outlet smaller than the diameter of the failure piston, and having a false bottom that can easily be removed from beneath a sample of compacted mate…

A flow meter for measuring a flow rate of a flow of a fluid includes a housing member including a first section configured to matingly couple with a second section. The flow meter further includes an integrally formed laminar flow member removably held within at least a portion of the first section of the housing member. The laminar flow member includes a body and a plurality of channels integrally formed within the body, wherein each of the plurality of channels is substantially continuous in t…

A flow sensor (1) is constituted by a substrate (4) having a front surface (4a) side facing a channel (3) for a measurement target fluid (2), and a channel forming member (5) and a plate (6) disposed oppositely across the substrate (4). The substrate (4) is formed of stainless steel having a thickness of about 50 .mu.m to 150 .mu.m into a plate. An electric insulating film is formed on that surface (4b) of the substrate (4) which is opposite to the channel (3) side, and a temperature detection s…

In a flow sensor (1) including an anticorrosion metallic diaphragm; an insulating film formed on one surface of the metallic diaphragm; and a flow rate measuring sensor formed on the insulating film, the other surface of the metallic diaphragm being in contact with a fluid under measure, between the insulating film (122) on which sensor devices (25) are formed and the metallic diaphragm, a buffer layer (121) having an intermediate linear expansion coefficient between the linear expansion coeffic…

A laser light source emits a first light beam irradiating a solution including target particles and being flowed in a flow cell to generate forward scattered light and orthogonal scattered light therefrom. A light emitting diode emits a second light beam irradiating the solution in the flow cell to generate at least one wavelength of fluorescence therefrom. A first detector is adapted to detect the forward scattered light. A second detector is adapted to detect the orthogonal scattered light. At…

A flow sensor readily obtains high sensitivity without errors due to tilting. The flow sensor includes a flow channel having a pair of parallel portions and temperature sensing resistors for heating a fluid to a preset temperature. The temperature sensing resistors are disposed on parts of the parallel portions of the flow channel, to detect a fluid flow rate based on a change in temperature distribution of a flow channel due to a change in flow rate of the fluid flowing through the flow channel…

Flow restriction to be fitted in a fluid line, consisting of a conduit part that has been produced from plastic by injection moulding and has been provided with a baffle closing the flow cross-section, wherein one or more openings have been made with the aid of a laser treatment. Each of these openings has a diameter of between 1 and 50 .mu.m. It has been found that, when a large number of openings are used, if one of the openings becomes blocked for whatever reason this has hardly any effect on…