Techmical Memorandum Analysis of Tests on a Convergent Nozzle in an Altitude Test Facility
May 1, 2018 - ESDU

In-flight deduction of propulsion forces from a turbo-jet engine requires separate assessment of the stream thrust resulting from the passage of fluid through the propelling nozzle and the force due to the passage of (air) mass-flow through the inlet to the engine. Previously, it was...

A Practical Guide to Turbulence and Flow Measurement by Thermal Anemometry (CTA), Laser-Doppler Anemometry (LDA) and Particle-Image Velocimetry (PIV) Part 4: Particle-Image Velocimetry
March 1, 2018 - ESDU

ESDU 17009 gives a detailed account of the principles of particle-image velocimetry (PIV), including single-camera and stereoscopic systems. Auto- and cross- correlation image analysis, using interrogation areas, is described together with adaptive correlation, using frame shifting and scaling....

SAE J3089 - Characterization of On-Board Vehicular Hydrogen Sensors
October 1, 2018 - SAE

This SAE Technical Information Report (TIR) provides test methods for evaluating hydrogen sensors when the hydrogen system integrator and/or vehicle manufacturer elect to use such devices on board their hydrogen vehicles, including hydrogen fuel cell electric vehicles (FCEV). The tests described in...

Flood Inundation Modeling and Hazard Mapping under Uncertainty in the Sungai Johor Basin, Malaysia
May 14, 2018 - CRC

Flooding can have devastating impacts on people's livelihood, economy and the environment. One way to minimize flood losses is using floodplain maps, which assist land planners and local authorities in identifying flood-prone areas, and provide useful information for rescue and relief agencies for...

A Practical Guide to Turbulence and Flow Measurement by Thermal Anemometry (CTA), Laser-Doppler Anemometry (LDA) and Particle-Image Velocimetry (PIV) Part 2: Constant-Temperature Anemometry
March 1, 2018 - ESDU

ESDU 16002 gives a detailed account of the principles of constant-temperature thermal anemometry (CTA). Typical single- and multiple- component hot-wire and hot-film probe configurations are described, together with their application in various media, setup and calibration procedures....

Aircraft Performance From Flight test Part 3: In-Flight Calibration of an Angle of Attack Sensor
November 1, 2017 - ESDU

Fundamental to the derivation of a performance model from flight testing is the determination of the incidence angles of the aircraft in flight. Knowledge of the effective angle of attack at the aircraft centre of gravity is of primary concern. An indication of the angle of sideslip may also be...

ISO 18481 - Hydrometry - Liquid flow measurement using end depth method in channels with a free overfall
December 1, 2017 - ISO

This document specifies a method for the estimation of the sub-critical flow of clear water in a smooth, essentially horizontal channel (or a gently sloping channel), abruptly discontinued at bottom by a hydraulic structure, with a vertical drop and discharging freely. Such an overfall forms...

ASTM C1130 - Standard Practice for Calibration of Thin Heat Flux Transducers
September 1, 2017 - ASTM

This practice, in conjunction with either Test Method C177, C518, C1114, or C1363, establishes procedures for the calibration of heat flux transducers that are dimensionally thin in comparison to their planar dimensions. The thickness of the heat flux transducer shall be less than 30 % of...

SAE J967 - Calibration Fluid for Diesel Injection Equipment
December 1, 2015 - SAE

This SAE Standard defines the requirements of a calibration fluid recommended for flow bench testing, calibration, and flushing of fuel injection equipment, in production facilities, in laboratories, and in service establishments.

ISO 12764 - Measurement of fluid flow in closed conduits - Flowrate measurement by means of vortex shedding flowmeters inserted in circular cross-section conduits running full
August 1, 2017 - ISO

This document a) describes the use of vortex shedding flow meters for liquids, gases, and steam, including a glossary and a set of engineering equations used for specifying performance, b) provides technical information to assist the user in selecting, specifying and applying vortex shedding...