A Method of Flow Measurement About Full-Scale and Model-Scale Vehicles
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In order to assess flow stability reasonably, this paper presents a new test method for flow stability of liquid flow standard facility with a flowmeter, demonstrates the basis of this method, proposes the detailed implementation measure and key process in flow stability test, and discusses the calculation method of flow stability parameters.
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This paper presents a scale-model relationship for the similarity between large and small scale-models in two-dimensional equilibrium beach profiles. Taking large scale-models using large scale equipment as prototypes, the experimental scale of a medium-sized model was gradually varied keeping the grain size ratio of model to prototype constant. A similarity-comparison between large and small scale beach profiles is made by considering the degree of experimental errors. Judgement results are graphically shown, and a scale-model relationship is proposed. It is found that the scale-model relationship proposed agrees with the ones derived from the empirical formulae expressing the properties of beach profiles. Additionally, the applicability of this scale-model relationship to the reproduction test of natural beaches is examined.
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Similarity (geometry)
Scale Effects
Constant (computer programming)
Degree (music)
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It is difficult to measure media flow of small-flow and high-viscosity.Target flow-meters offer unique features to flow measurement of media with high-viscosity.While the traditional target flow-meters is complicated in mechanical structure and features low sensitivity and flow coefficient shifted with small-flow.The principle of target flow-meter was introduced and design the intelligent small-flow target flow meter based on a modification method of flow coefficient shifted with small-flow.The results of experimentation show that the flow meter designed has high precision used in the condition of small-flow and high-viscosity.
Flow coefficient
Magnetic flow meter
Ultrasonic flow meter
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The wave model regime, in the given bay of the arbitrary outline, have been studing at the three scales 1:150, 1:300 and 1:450. The models had the fixed bed. The model of the scale 1:1^0 had been conditionally admitted as the prototype at the investigation. As a result of the study the scale effect for the present case have been found* The correction scale factors depend on the relative water depth.
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Towing
Seakeeping
Buoy
Scale model
Sea trial
Naval architecture
Full scale
Wave model
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Target flow meter is commonly used for measuring flow, but there are many shortcomings of the traditional target flow meter, such as complex mechanical structure, low sensitivity and changing flow coefficient with small-flow, and so on. This paper describes the principle of the sensors about the target flow meter and introduces a modification method of flow coefficient shifted with small-flow. It also has given the system design of the intelligent small-flow target flow meter based on single-chip microcomputer. Experimental results show that we can achieve accurate measuring under the high viscosity and small- flow and low flow by the intelligent flow meter.
Magnetic flow meter
Flow coefficient
Ultrasonic flow meter
Micro computer
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This paper presents a scale-model relationship for the similarity between large and small scale-models in two-dimensional equilibrium beach profiles. Taking large scale-models using large scale equipment as prototypes, the experimental scale of a medium-sized model was gradually varied keeping the grain size ratio of model to prototype constant. A similarity-comparison between large and small scale beach profiles is made by considering the degree of experimental errors. Judgement results are graphically shown, and a scale-model relationship is proposed. It is found that the scale-model relationship proposed agrees with the ones derived from the empirical formulae expressing the properties of beach profiles. Additionally, the applicability of this scale-model relationship to the reproduction test of natural beaches is examined.
Scale model
Similarity (geometry)
Constant (computer programming)
Degree (music)
Scale Effects
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Multiphase flow
Computational model
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This paper presents a scale-model relationship for the similarity between large and small scale-models in two-dimensional equilibrium beach profiles. Taking large scale-models using large scale equipment as prototypes, the experimental scale of a medium-sized model was gradually varied keeping the grain size ratio of model to prototype constant. A similarity-comparison between large and small scale beach profiles is made by considering the degree of experimental errors. Judgement results are graphically shown, and a scale-model relationship is proposed. It is found that the scale-model relationship proposed agrees with the ones derived from the empirical formulae expressing the properties of beach profiles. Additionally, the applicability of this scale-model relationship to the reproduction test of natural beaches is examined.
Scale model
Similarity (geometry)
Degree (music)
Constant (computer programming)
Scale Effects
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