# Open channel flows

Xem 1-19 trên 19 kết quả Open channel flows
• ### OPEN CHANNEL HYDRAULICS FOR ENGINEERS

The textbook of Open Channel Hydraulics for Engineers, also called Applied Hydraulics, emphasizes the dynamics of the open-channel flow, by attempting to provide a complete framework of the basic equations of motion of the fluid, which are used as building blocks for the treatment of many practical problems. The structure of the document, with seven chapters totally, follows a logical sequence from a description and classification of Fluid Mechanics and Open Channel Flows, as reviewed in Chapter 1. A development of the basic equation of motion for uniform flow is encountered in Chapter 2.

• ### fundamentals of fluid mechanics (4e): part 2

(bq) part 2 book "fundamentals of fluid mechanics" has contents: viscous flow in pipes, open channel flow, flow over immersed bodies, flow over immersed bodies, turbomachines (e-book only)/

• ### fluid mechanics (edition): part 2

(bq) part 2 book "fluid mechanics" has contents: approximate solutions of the navier–stokes equation; flow over bodies - drag and lift; compressible flow; turbomachinery; open channel flow, property tables and charts.

• ### A two dimensional quasi model for simulating flow in open channels

This paper proposes a 2D-quasi model for simulations of the lateral distribution of flow velocity and of unit water discharge in open-channel sections. The latters are obtained by solving the governing equation, which is derived from the Reynolds equations and allows for taking into account the gravity, bed shear stress, and turbulent diffusion force in calculations. Using the experimental data, a sensitivity analysis of modeling parameters, e.g. Manning coefficient and eddy viscosity was performed firstly.

• ### Open channel hydraulics for engineers. Chapter 3 hydraulics jump

In this chapter, the specific-energy concept is introduced and, then, the momentum principle is applied to open-channel flows. The hydraulic jump and its types are defined and classified. This chapter introduces how to determine the direct and submerged hydraulics jump; their characteristics are presented

• ### Open channel hydraulics for engineers. Chapter 2 uniform flow

The chapter on uniform flow in open channels is basic knowledge required for all hydraulics students. In this chapter, we shall assume the flow to be uniform, unless specified otherwise. This chapter guides students how to determine the rate of discharge, the depth of flow, and the velocity. The slope of the bed and the cross-sectional area remain constant over the given length of the channel under the uniform-flow conditions. The same holds for the computation of the most economical cross section when designing the channel.

• ### Open channel hydraulics for engineers. Chapter 4 non uniform flow

Linking up with Chapter 2, dealing with uniform flow in open channels, it may be noted that any change in the flow phenomenon (i.e. flow rate, velocity, flow depth, flow area, bed slope do not remain constant) causes the flow to be non-uniform. This chapter will discuss the effect of change in any one of the above quantities, including specific energy, critical depth and slope, and flow types. How to draw water surface profiles will also be introduced.

• ### Luận án tiến sĩ " HYDRAULIC MODELING OF OPEN CHANNEL FLOWS OVER AN ARBITRARY 3-D SURFACE AND ITS APPLICATIONS IN AMENITY HYDRAULIC ENGINEERING "

Average depth model has a variety of applications in hydraulic engineering, especially in applications that flow depth is much smaller than the width of the flow. In this method the vertical variation is negligible and the hydraulic variables average integrated from channel bed to the surface free for the vertical axis. in equations arising management, pure hydrostatic pressure is assumed that not really valid in the case of flow in the bed is curved and can not be described curvature effects of the bed.

• ### introduction to fluid mechanics: part 2 - edward j. shaughnessy

(bq) part 2 book "introduction to fluid mechanics" has contents: elements of flow visualization and flow structure, governing equations of fluid dynamics, analysis of incompressible flow, flow in pipes and ducts, external flow, open channel flow.

• ### kothandaraman fluid mechanics (2ed edition): part 2

(bq) part 2 book "kothandaraman fluid mechanics" has contents: dimensional analysis, similitude and model testing, boundary layer theory and flow over surfaces, flow in open channels, dynamics of fluid flow, hydraulic turbines, rotodynamic pumps, reciprocating pumps.

• ### fluid mechanics for engineers in si units: part 2

part 2 book “fluid mechanics for engineers in si units” has ontents: flow in closed conduits, turbomachines, flow in open channels, drag and lift, boundary-layer flow, compressible flow, units and conversion factors.

• ### Simulation of a feedback control technique through irrigation canal junctions

A linear quadratic controller based algorithm was developed for simulating the dynamics of a single-reach irrigation canal with a channel junction. Using the concepts of feedback control theory, an expression for an upstream gate opening of an irrigation canal reach with a channel junction operated based upon a constant-level control was obtained.

• ### An experimental investigation of head loss through a triangular ‘‘V- shaped” screen

Common traditional screens (screens perpendicular and vertical to the flow direction) face extensive problems with screen blockage, which can result in adverse hydraulic, environmental, and economic consequences. Experimentally, this paper presents an advanced trash screen concept to reduce traditional screen problems and improve the hydraulic performance of screens. The traditional screen is redeveloped using a triangular V shape with circular bars in the flow direction.

• ### Heat Transfer Applications for the Practicing Engineer

After a review of the literature, the author has concluded that the concept of heat transfer was first introduced by the English scientist Sir Isaac Newton in his 1701 paper entitled “Scala Graduum Caloris.”(1) The specific ideas of heat convection and Newton’s Law of Cooling were developed from that paper

• ### Open channel hydraulics for engineers. Chapter 7 unsteady flow

This chapter introduces issues concerning unsteady flow, i.e. flow situations in which hydraulic conditions change with time. Many flow phenomena of great importance to the engineer are unsteady in character, and cannot be reduced to steady flow by changing the viewpoint of the observer. The equations of motion are formulated and the method of characteristics is introduced as main part of this chapter. The concept of positive and negative waves and formation of surges are described. Finally, some solutions to unsteady flow equations are introduced in their mathematical concepts.......

• ### Open channel hydraulics for engineers. Chapter 6 transitions and energy dissipators

The term "transition" is introduced whenever a channel's cross-sectional configuration (shape and dimension) changes along its length. Beside it, in the water control design, engineers need to provide for the dissipation of excess kinetic energy possessed by the downstream flow. Formulas for design calculation of transition works and energy dissipators are presented in this chapter

• ### Linear-like discrete-time fuzzy control in the regulation of irrigation canals

A linear-like discrete-time fuzzy controller was designed to control and stabilize a single-pool irrigation canal. Saint Venant equations for open-channel flow were linearized using the Taylor series and a finite-difference approximation of the original nonlinear partial differential equations.

• ### Beyond Transparency: Collective Engagement in Sustainable Design

For a timely answer to the question of sustainability, or how to provide for future generations, there needs to be shared accounting of our social and physical resources. Supply chain transparency makes it possible to map resource flows and ensure dependable production while avoiding social and environmental problems. Open channels of communications can support a collective effort to account for the impacts of supply chains and engage more people in the invention of long-term solutions, or sustainable design....

• ### Calibration and validation of HEC-RAS model for minor command in coastal region

In this study HEC-RAS model was used for the hydraulic analysis of the Nagpur minor canal irrigation system. Hydraulic models are the basic tools for understanding the hydraulic flow behaviours of open channels. Manning‟s roughness is very sensitive parameters in development of the hydraulic models.