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『Formula for Venturi flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. What is the influence of the diameter of the Venturi tube throat on the measurement accuracy and measurement range of the Venturi flowmeter? (Specifically...
According to the Venturi tube mass flow formula: M=[C/(1- β ^ 4) ^ (1/2)] ·ε · (π/4) · d ^ 2 · (2 ·Δ P ·ρ) ^ (1/2), where M - mass flow rate C - outflow coefficient C=[M (1- β ^ 4) ^ (1/2)]/[(π/4) · d ^ 2 · (2 ·Δ P ·ρ) ^ (1/2)] C depends on the Reynolds number, which depends on the mass flow rate M and must be obtained iteratively. β - throat diameter d/pipe diameter D ε - pipeline expansion coefficient ε=[M (1- β ^ 4) ^ (1/2)]/[(π/4) · d ^ 2 · C · (2 ·Δ P ·ρ) ^ (1/2)] d - throat diameter Δ P - differential pressure ρ - medium density under working conditions. It can be seen that changing the throat diameter can change the differential pressure range, and your problem can actually be attributed to the influence of differential pressure range on measurement; The design of throttling components must ensure that the outflow coefficient C is constant, that is, the Reynolds number remains unchanged within the required accuracy range (throttling flow meters can only ensure the accuracy of a commonly used section within the measurement range). And the Reynolds number is also related to the throat diameter (which affects the flow velocity and the flow velocity at maximum and minimum flow rates). Due to the iterative method required to obtain the outflow coefficient C, it is necessary to first give a differential pressure, calculate the throat diameter, and then verify whether it meets the requirements. If it does not meet the requirements, the throat diameter should be recalculated. If it still does not meet the requirements after multiple repetitions, the cal
2. Experimental principle and calculation formula of Venturi flowmeter
Unveiling the mystery of Venturi flowmeter: Detailed explanation of the principle and calculation formula of Venturi flowmeter. As a treasure of fluid mechanics, its working principle is based on the profound Venturi effect.
. When the fluid passes through a gradually contracting pipeline, the flow velocity will dramatically increase, which is supported by the continuity equation and Bernoullis law. Lets explore the scientific principles behind this precision measuring tool together. The Magic of Bernoullis Equation Bernoullis Law, proposed by the genius scientist Daniel Bernoulli in the 18th century, tells us that when a fluid flows at an equal height, an increase in velocity will be accompanied by a decrease in pressure. The formula is succinctly expressed as: Equation 1: p1+1/2 ρ v1 ²+ρ gh1=p2+1/2 ρ v2 ²+ρ gh2, where p represents pressure, v is flow velocity, ρ is fluid density, g is gravitational acceleration, and h represents height. This formula reveals the core equilibrium of fluid dynamics, and the Venturi tube uses this principle to measure flow rate. The journey of accurate calculation formula in the Venturi tube, through a series of calculations, we can obtain the theoretical value of flow rate. Firstly, by using the inn