#MECFLU 22 ESCOAMENTO PERMANENTE E NÃO-PERMANENTE | ESCOAMENTO LAMINAR E TURBULENTO | REYNOLDS

BECOME A MEMBER and access the exclusive FLUID MECHANICS course:    / @engenhariaecia   ___________ Help Vila Vicentina de Itajubá, which has been caring for the elderly in the city of Itajubá-MG for 100 years https://www.vilavicentina.com.br/ PIX Key CNPJ: 21.041.405/0001-48 Vila São Vicente de Paulo de Itajubá ___________ Subscribe to What'sNews da Engenharia e Cia and receive notifications about our posts, videos and invitations. Access https://www.engenhariaecia.eng.br/new... or contact us directly on WHATS 11 96552 4885 https://hotm.art/whatsnews ___________ CONTACT: --- email: [email protected] --- Whats: 11 95696 7808 _________ Learn about our courses: https://www.engenhariaecia.eng.br/cursos ________ LESSON TOPIC: STEADY, UNSTEADY, LAMINAR AND TURBULENT FLOW IN FLUID MECHANICS In fluid mechanics, the concepts of steady, unsteady, laminar and turbulent flow are fundamental to understanding how a fluid behaves over time and space in different applications. Steady flow occurs when the fluid properties, such as velocity and pressure, remain constant at each point in the system over time. A classic example is a system with reservoirs connected by pipes, where the inflow rate equals the outflow rate, maintaining a constant reservoir level. This indicates that the variables do not change over time, characterizing a steady-state regime. This concept is applicable not only in fluid mechanics but also in other areas of engineering such as thermodynamics and heat transfer. The essence of the steady-state regime is the invariance of properties over time at each point in the system. The unsteady-state regime occurs when these properties vary over time. For example, in a domestic water tank, the water level changes according to use and refilling, which alters the height of the liquid column and, consequently, the pressure and reach of the water jet. Furthermore, another important aspect is the classification of the flow according to its internal nature: laminar or turbulent. Laminar flow is characterized by particles flowing in parallel layers, with little or no mixing between them. This type of flow is common in narrow pipes and at low speeds. It can be visualized by injecting dye into a tube: the dye moves, forming smooth, defined lines without dispersing. Turbulent flow, on the other hand, is characterized by chaotic and random movements, with intense mixing between the fluid layers. This type of flow occurs at high speeds or in systems with large diameters. It exhibits greater pressure losses and is more common in industrial applications. The transition between these two regimes can be analyzed using the Reynolds number, a dimensionless quantity that relates inertial and viscous forces of the fluid. If the Reynolds number is less than 2,000, the flow tends to be laminar; between 2,000 and 4,000 it is considered transitional; and above 4,000, the flow is turbulent. This number depends on variables such as fluid velocity, pipe diameter, and fluid viscosity, making it an essential tool for hydraulic system design and flow behavior analysis. #fluidmechanics #engineeringandcompany #engineering #flumechanics #engineeringandcompany #micelli #engineering #fluidmechanics