- 25
- 3 975
Dr. Simeng Li
United States
Приєднався 18 бер 2020
I am a Civil Engineering professor specializing in environmental and water resources. My vision for this UA-cam channel is to offer structured learning materials and in-depth problem walkthroughs, as I believe that engineering education should extend beyond the university classroom. If there are specific topics or problems you'd like me to explain, feel free to leave a comment.
Using Pump Performance Curves (together with System Curve) to Interpret Performance Parameters
This video covers the process of using a pump's performance curves (head curve, efficiency curve, break horsepower curve, and net positive suction head curve) to estimate the values of this pump's performance parameters. The first step is to find the operating point. You will find two common formats of performance curves being discussed here. #fluidmechanics #pumpoperator #watersupplyengineering #systemcurve #operatingpoint
Переглядів: 119
Відео
Anaerobic Digester Calculations - Sludge Quantity & Digester Volume
Переглядів 8414 днів тому
This video introduces the methods for estimating sludge quantity during wastewater and volume of a slow-rate anaerobic digester.
Air Stripping - Basics and Packing Height Design Calculation
Переглядів 13614 днів тому
This video introduces air stripping, a widely used technology to remove volatile organic matters (VOCs) from contaminated groundwater.
System Curve vs Pump Head Curve - How to Find Operating Point?
Переглядів 8514 днів тому
This video shows the differences between a system curve and a pump's head curve, as well as their close relationship for selecting pumps for a water supply/distribution system.
Pump Head in Energy Equation | The Output Energy (Power) of the Pump to the System
Переглядів 5407 місяців тому
This video introduces pumps in water supply and distribution systems, and explains how pump head in the Energy Equation is used as the energy (power) generated by the pump to the flow in the system.
Major Head Loss | The Procedure of Calculating Major Head Loss Using Darcy-Weisbach Equation
Переглядів 1057 місяців тому
This video describes the procedure of calculating the major head loss of a pressurized pipe flow using the Darcy-Weisbach Equation. #fluidmechanics #civilengineering #engineeringeducation #feexam #peexam #headloss
Moody Diagram | Stop Being Moody When Calculating Major Head Loss #fluidmechanics #headloss
Переглядів 567 місяців тому
How to calculate major head loss with Darcy-Weisbach Equation? Start with determining the flow regime using the Reynolds number. Then calculate the friction factor accordingly. This video shows you how to use the Moody diagram for friction factor. #fluidmechanics #civilengineering #engineeringeducation #feexam #peexam #headloss
Energy Equation Term-by-Term Analysis | Pump Head, Turbine Head, and Head Loss #fluidmechanics
Переглядів 1109 місяців тому
We will explain each of the terms in the Energy Equation in this video. #fluidmechanics #engineeringeducation #civilengineering #peexam #feexam
How to Fit Isotherm Adsorption Experimental Data with Freundlich Adsorption Model? A Practical Guide
Переглядів 719 місяців тому
The isotherm adsorption experiment process is described. The experimental data was used to fit the Freundlich Adsorption Model in order to determine the relevant characteristic parameters. #environmentalremediation #chemicalfate #chemicaltransport #adsorption #isothermalprocess
Hydrostatic Force Calculation | Centroid & Center of Pressure on a Panel Surface #fluidmechanics
Переглядів 3239 місяців тому
We will use an example problem to explain the calculation of hydrostatic force, as well as the process of locating centroid and center of pressure on a panel surface. #fluidmechanics #engineeringeducation #civilengineering #hydrostatic #hydrostatics
Two Example Problems for the Viscosity Equation: A Must for FE/PE Civil Engineering #fluidmechanics
Переглядів 879 місяців тому
Two example problems about the use of the Viscosity Equation: shear stress, dynamic viscosity, velocity gradient, etc. #fluidmechanics #engineeringeducation #civilengineering #feexam #peexam #engineeringessentials
Step-by-Step Examples | How to find Dimensional Formula? Density & Specific Weight (Imperial Units)
Переглядів 1069 місяців тому
Two step-by-step examples. The first one explains what dimensions are and how to find dimensional formula for a given entity. The second problem shows the calculation of density (in slug/ft^3), specific weight (in lbf/ft^3), and specific gravity (dimensionless).
Needed Fire Flow Estimation (Example) | Step by Step NFF Estimation Example Problem #watersupply
Переглядів 1459 місяців тому
Follow this example to gain a better understanding of using ISO method for the estimation of needed fire flow (NFF). #fluidmechanics #watersupply #engineeringeducation #civilengineering #neededfireflow #waterdemand
Hydrostatic Pressure & Hydrostatic Force | Equations for Their Calculations #fluidmechanics
Переглядів 1879 місяців тому
This video provides a brief explanation of the equations used to calculate hydrostatic pressure (1:48) and hydrostatic force (2:51). Emphasizing the distinction between the centroid of the immersed surface and the center of pressure is crucial for understanding and using these equations. #fluidmechanics #engineeringeducation #civilengineering #feexam #feexam
Principle of Manometry | A Simple Journey To Skip Hydrostatic Equations for Hydrostatic Problems
Переглядів 4410 місяців тому
In this video, we will talk about the links between hydrostatic algebraic equation and the Principle of Manometry derived from it. In the end, we will talk about how to calculate unknown hydrostatic pressure at any location within a fluid in any given manometer it is a journey from the known pressure towards the unknown! #fluidmechanics #engineeringeducation #civilengineering #peexam #feexam
Hydrostatic Equations | Step-by-Step Derivations Showing Critical Assumptions Made #fluidmechanics
Переглядів 15410 місяців тому
Hydrostatic Equations | Step-by-Step Derivations Showing Critical Assumptions Made #fluidmechanics
Types of Pressure | Links & differences btw ABSOLUTE, GAGE, VACUUM, and local ATMOSPHERIC pressure
Переглядів 5110 місяців тому
Types of Pressure | Links & differences btw ABSOLUTE, GAGE, VACUUM, and local ATMOSPHERIC pressure
How To Run A Water Budget For A Watershed? | Example Problem Solved #waterconservation #watersupply
Переглядів 19610 місяців тому
How To Run A Water Budget For A Watershed? | Example Problem Solved #waterconservation #watersupply
Volatility | How to Convert Vapor Pressure into Vapor Concentration? Units of Henry's Law Constant
Переглядів 16410 місяців тому
Volatility | How to Convert Vapor Pressure into Vapor Concentration? Units of Henry's Law Constant
Needed Fire Flow | How to Use the ISO Method for Estimating the Needed Fire Flow? #watersupply
Переглядів 25710 місяців тому
Needed Fire Flow | How to Use the ISO Method for Estimating the Needed Fire Flow? #watersupply
Water Demand Explained | How to Estimate Water Demand for a New Development? #watersupply
Переглядів 29710 місяців тому
Water Demand Explained | How to Estimate Water Demand for a New Development? #watersupply
Water Budget Explained | A Useful Tool for Sustainable Water Management #SustainableWaterPlanning
Переглядів 22010 місяців тому
Water Budget Explained | A Useful Tool for Sustainable Water Management #SustainableWaterPlanning
Water Availability Explained | How To Meet Increasing Water Demand? #WaterCrisis #WaterConservation
Переглядів 16810 місяців тому
Water Availability Explained | How To Meet Increasing Water Demand? #WaterCrisis #WaterConservation
Fluid Properties Explained | Density, Specific Weight, Specific Gravity, Viscosity, & Vapor Pressure
Переглядів 17310 місяців тому
Fluid Properties Explained | Density, Specific Weight, Specific Gravity, Viscosity, & Vapor Pressure
Surprising Water Facts | How Much Do You Really Know About Water? #WaterFacts #WaterEducation
Переглядів 11210 місяців тому
Surprising Water Facts | How Much Do You Really Know About Water? #WaterFacts #WaterEducation