A rivers flow is the volume of water that moves past point on the river in a given time. Volume of flow is also called discharge. As more water flows through a river, its speed increases. A flooding river can carry huge amounts of sand, soil, and other many
The process of erosion that would be occurring would be hydraulic action, attrition and corrosion. As the river goes downstream the velocity increases. River velocity is determined by the efficiency of the river in overcoming friction with the bed and banks . The velocity of a river refers to the rate of water movement. The velocity is slowest in the upper course because energy is lost because of friction.
When water evaporates, it rises into the cooler air, collects, and forms clouds. There, the water vapor molecules cool down and change back into liquid water. This is called condensation. [pic] As more and more water vapor cools into the clouds, the water droplets that form the clouds become larger and larger. These droplets get so big that the swirling winds in the atmosphere can no longer hold them up.
The buoyancy force of the water pushing up on the block is Fbouyancy=PwaterAblock=ρwaterxgAblock=mdisplaced waterg. The weight of the water displaced by the block is equal to the buoyancy force upward on the block. Note, the volume of the water displaced by the bock is the volume of the block, which is under water. If not in motion, the buoyancy force upward on the block is balanced by the weight of the block. Using this information, we can calculate the amount of the block that should be underwater using the following, mblackg=Fbouyancy=mdisplaced waterg therefore, ρblockVblock=ρwaterVdisplaced water →ρblockh=ρwaterx.
TITLE Experiment 2 - Cooling Tower Demonstrator OBJECTIVES • To determine the “end state” properties of air and water from tables or charts. • To determine energy and mass balances using steady flow equation on selected system. • To investigate the effect of cooling load on “Wet Bulb Approach”. • To investigate the effect of air velocity on: (a) Wet Bulb Approach, (b) pressure drop through the packing. INTRODUCTION A cooling tower is a heat rejection device, which extracts waste heat from processes to the atmosphere via a water stream.
Rejuvenation: What is it, what are its causes and its resulting landforms? Rejuvenation occurs when the base level that the river is flowing down to is lowered. Rejuvenation may result from causes which are dynamic, eustatic or isostatic in nature. All of these cause the river to undergo a sudden increase in vertical erosion as the river gains gravitational potential energy. Dynamic rejuvenation often occurs because of the uplift of a land mass.
Rainwater and melted snow and ice that move too quickly to infiltrate the ground become runoff. Runoff replenishes the water on Earth's surface and helps to continue the water cycle. The next step in the cycle — evapotranspiration — returns water to the atmosphere. The Sun causes evaporation by heating liquid water on Earth's surface. Transpiration — the evaporation of water from pores in the leaves of plants — also releases water vapor into the atmosphere.
During the experiment, water is fed through a hose connector and the flow rate can be adjusted at the flow regulator valve at the outlet of the test section. Problem Formulation Bernoulli’s Principle can be verified by the Bernoulli’s equation. The Bernoulli’s equation is an approximate relation between pressure, velocity, and elevation. While the Continuity equation relates the speed of a fluid that moving through a pipe to the cross sectional area of the same, it states that as a radius of the pipe decreases the speed of fluid flow must increase and vice-versa. However, Bernoulli’s
2H5 IMPACT OF JET INTRODUCTION Mechanical work can be produced by using pressure of moving fluid at high velocity. As an example jet of water from a nozzle can produce force when it strikes a plane flat surface or plate. This type of force can produce power to generate a system such as hydropower turbine. The force exerted onto the plate will depend on the density of fluid, discharge and jet velocity. The force is also depends on whether the plate is at moving or stationary condition.
Hypodermic tube is used to measure the total head pressure along the venturi meter tube. The time to collect 0.003 m3 water in the tank is measured. Base on the result calculated after the experiment, it can be seen that the velocity is high at the narrow part of the venturi tube and low at wider section of the tube. As the velocity is increased, the total head, h* also increase. Thus, the total head value is highest at h1 and the lowest at h3.