What are the two types of fluid flow states?

The flow state of fluid is divided into laminar flow and turbulent flow. Laminar flow is a state of fluid flow. When the flow velocity is very small, the fluids flow in layers and do not mix with each other, which is called laminar flow or laminar flow. With the increase of flow velocity, the streamline of fluid begins to oscillate in waves, and the frequency and amplitude of oscillation increase with the increase of flow velocity. This flow state is called transition flow. When the velocity increases to a great extent, the streamline is no longer clearly distinguishable, and many small vortices appear in the flow field, which is called turbulence. Also known as turbulence, turbulence or turbulence, this change can be quantified by Reynolds number. When Reynolds number is small, the influence of viscous force on the flow field is greater than inertial force, and the disturbance of velocity in the flow field will be attenuated by viscous force, so the fluid flow is stable laminar. On the contrary, when Reynolds number is large, the influence of inertial force on the flow field is greater than that of viscous force, the fluid flow is unstable, and the small change of velocity is easy to develop and strengthen, forming chaotic and irregular turbulent flow field.