Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Orifice Plate"”.
-
Computer aided mathematical modelling of turbulent flow for orifice metering
… high Reynolds number turbulence through an orifice plate. The model developed for orifice plates was based on a particular closed form turbulent model: the k-ε two equation model developed at Imperial College, London and embodied in the TEACH-T finite difference computer code. A basic model …
-
Calibration of orifice plates with special emphasis on edge sharpness and eccentricity
… literature pertaining to flov1 measurement with orifice plates is presented. Special emphasis is laid on the factors influencing the coefficient of discharge Of orifice plates and. on the difference between the various engineering standards. Particular consideration is given to the effect on the …
-
Modeling Two-Phase Flow in the Downcomer of a Once-Through Steam Generator using RELAP5/MOD2
… studied. Emphasis is also placed on modeling the orifice plate of the OTSG downcomer which has been added to stabilize pressure fluctuations between the downcomer and tube bundle of the OTSG. While several different schemes are explored for modeling the orifice plate, a branch connection with an …
-
Experimental study and characterization of bubble behaviors in the orifice-induced hydrodynamic cavitation
… to characterize the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The …
-
MANIPULATION OF ELECTROSPRAY GENERATED DROPLETS USING VARIOUS VAPORS
… with the reagent vapors between the curtain and orifice plate for approximately a millisecond, which is the time required for analyte desolvation. A variety of vapors, particularly polar aprotic vapors, can be used to reduce alkali metal adduction on proteins. This effect is due to the alkali …
-
Effect of a Simulated Butterfly Valve on the Erosion-Corrosion Rate of Nickel Aluminum Bronze Alloys in Highly Turbulent Seawater
… the valve. A butterfly valve is simulated using orifice plates of varying diameters to mimic flow conditions at different disc angles. An orifice plate is a simple device with a hole in its center that is designed to restrict fluid flow across a fluid line. Under the same hydrodynamic conditions, …
-
The characterization of the flowfield of a dump combustor
… (premixed mode) at the duct center line and an orifice plate installed immediately upstream of the fuel injectors, with propane as the fuel. Once stability was achieved, LOA data was taken. The results showed some significant differences between the reacting and nonreacting flows. The most …
-
Development of Methods to Aid in Flotation Circuit Evaluations and Drip Pan Design
… or unit cell designs. A study of the effect that plate thickness has on flow rate was performed in order to develop a model for flow through an orifice plate. The results of this work showed that plate thickness has little to no effect on the flow rate.
-
Methodology for characterization of representativeness uncertainty in performance indicator measurements of thermal and nuclear power plants
… They are: Mass flow rate measurement by an orifice plate (Case Study 1), Steam Generator recirculation ratio measurement using chemical tracers (Case Study 2), The simulation of cooling tower deformation using a Photomodeler (Case Study 3) and the NOx emission measurement from a Combined …
-
Measurements of in-cylinder heat transfer with inflow-produced turbulence
… of this apparatus to previous work. Then, an orifice plate was added to the apparatus to generate simulated inflow-produced turbulence. The tests from this configuration were compared to the previous set, without the turbulence, to see how inflow-produced turbulence affected heat transfer and …
-
Bench-scale fire toxicity measurements of polymers and cables
… This can be partially overcome by the use of an orifice plate with appropriate outlet size. Thus Casico power cable has been investigated in the steadystate tube furnace using under-ventilated fire conditions. This gave rise to apparently negative oxygen concentrations inside the furnace tube at …
-
Performance of reduced-scale Vortex amplifiers used to control glovebox dust
… port momentum. A temporary solution using an orifice plate and spacing chamber has been shown to reduce essential nitrogen supply to one quarter that without the modification. Addition of the orifice plates enables further reduction in nitrogen use, and the smallest orifice tested performs …