Why is the Reynolds number dimensionless? The Reynolds number is dimensionless because the dimensions (and units) of the quantities in its defining equation cancel out. It is a ratio of two forces, the inertial force and the viscous force, so it is a pure number.Reynolds...
The flow regime (either laminar or turbulent) is determined by evaluating the Reynolds number of the flow refer to (Flow Velocity profiles). TheReynolds number, based on studies of Osborn Reynolds, is a dimensionless number comprised of the physical characteristics of the flow. Equation 1 is use...
Reynolds Number can then be calculated using equation (1) likeRe = (910 kg/m3) (2.6 m/s) (25 mm) (10-3 m/mm) / (0.38 Ns/m2) = 156 ((kg m/s2)/N) = 156 ~ Laminar flow 1 (N) = 1 (kg m/s2) Related Mobile Apps from The Engineering ToolBox ...
\\\ ¦ re-n ə ldz-\\\ [Osborne Reynolds † 1912 English physicist] (1910) n. The Reynolds number Re is the ratio of kinetic energy to viscous energy; the equation is where s is the speed of the fluid, cm/s, r the radius of tube, cm, d the fluid density, v d the dyn...
Reynolds Number, R: 1.00 × 105 Plate flow is transitioning to turbulent at a distance D from the leading edge. Pipe flow is fully turbulent in a pipe of diameter D. Equation Behind the Calculator The Reynolds Number is found from the equation, Glossary...
Fluid temperature for gas density calculation based on the ideal gas state equation p - pressure Fluid pressure at the start of the pipe for gas density calculation based on the ideal gas state equation R - gas constant Gas constant in terms of energy per unit of mass and temperature, for ...
(1). This equation was presented by Terzis et al. [62], in which Δp is the flow pressure drop obtained through the measurement of the pressure upstream and downstream of the impinging surface, ṁ is the overall mass flow rate, n is the number of nozzles, and ρ is the flow ...
The Shell-MIT equation, sometimes called the MIT equation, is used in calculation of pressure drop in heavy crude oil and heated liquid pipelines. Using this method, a modified Reynolds number Rm is calculated first from the Reynolds number as follows: (5.39)R=92.24(Q)/(Dν) (5.40)Rm=R...
Reynolds Number | Definition, Equation & Units from Chapter 8 / Lesson 13 136K What is a Reynolds number? Learn what is the Reynolds number of a fluid. Understand the equation of the Reynolds number. Know its unit and understan...
输气管的雷诺数一般高达106~107,是输油管的10~100倍。The Reynolds number of the pipeline is generally as high as 106~107, which is 10~100 times that of the pipeline.