Fluid Dynamics

Reynolds Number Simulator

Examine fluid behavior in circular pipes. Analyze transition parameters between laminar, transitional, and turbulent regimes by modifying density, speed, diameter, and viscosity.

Regime

Turbulent

Based on Re

Viscosity

1.000 cP

Dynamic value

Output

CSV

Export ready

Parameters

Fluid Preset

Velocity (v)2.00 m/s

0.120

Pipe Diameter (D)0.10 m

0.0052

Fluid Density (ρ)1000 kg/m³

12000

Dynamic Viscosity (μ)0.00 Pa·s

0.000010.5

Animated velocity sweep

Governing Equations

Reynolds Number Formula

Re = \frac{\rho v D}{\mu}

Kinematic Viscosity

\nu = \frac{\mu}{\rho}

Critical Flow Velocity

v_{crit} = \frac{2300 \mu}{\rho D}

Laminar Flow (Re < 2300): Smooth parallel streamlines with high viscous damping.

Transitional Flow (2300 ≤ Re ≤ 4000): Flow fluctuates unpredictably between linear and swirling states.

Turbulent Flow (Re > 4000): Chaotic fluid motion with rapid shear fluctuations and vortex shedding.

Interactive Flow Pipe

Reynolds Number

2,00,000

Dimensionless ratio of inertial to viscous forces

Flow Regime

Turbulent

Calculated flow state classification

Kinematic Viscosity

1.000e-6 m²/s

Kinematic Viscosity (ν = μ / ρ)

Critical Velocity

0.023 m/s

Velocity marking Laminar limit (Re = 2300)

Regime Profile: Reynolds Number vs Velocity

Flow Properties Sweep Table

Velocity (m/s)	Reynolds Number	Dyn Pressure (Pa)
0.10	10,000	5
1.43	1,42,667	1,017.7
2.75	2,75,333	3,790.4
4.08	4,08,000	8,323.2
5.41	5,40,667	14,616
6.73	6,73,333	22,668.9
8.06	8,06,000	32,481.8
9.39	9,38,667	44,054.8
10.71	10,71,333	57,387.8
12.04	12,04,000	72,480.8
13.37	13,36,667	89,333.9
14.69	14,69,333	1,07,947
16.02	16,02,000	1,28,320.2
17.35	17,34,667	1,50,453.4
18.67	18,67,333	1,74,346.7
20.00	20,00,000	2,00,000