- Видео 20
- Просмотров 206 099
Engineering Made Easy
США
Добавлен 7 июн 2018
Explanatory and tutorial videos on essential Mechanical Engineering topics, provided at a basic level for rapid understanding. No extraneous information, just what you need to be successful in courses and in a professional setting. Covering essential topics such as thermodynamics, numerical analysis, MATLAB, fluid mechanics and much more!
Fluid Mechanics Example - Pressure Drop in a Circular Pipe, Laminar Flow
Example problem walking through how to calculate the Reynolds number, the pressure gradient, and the maximum velocity for fully developed, laminar flow in a circular pipe.
Start here to learn the equations used in this video: ruclips.net/video/v_XGHsL-9b8/видео.html
Start here to learn the equations used in this video: ruclips.net/video/v_XGHsL-9b8/видео.html
Просмотров: 801
Видео
Fluid Mechanics - Laminar Flow in a Pipe, Pressure Drop and Velocity Equations
Просмотров 2,8 тыс.2 года назад
Several equations used to calculate the pressure drop, average velocity, and maximum velocity for fluid flowing through a circular pipe at laminar conditions. Quick recap of Reynolds number and how to determine if flow is laminar. Check out a worked example using these equations here: ruclips.net/video/USBQmRyzwKg/видео.html
Thermodynamics - Superheated Steam Properties Example - No Interpolation
Просмотров 1,9 тыс.2 года назад
Quick example problem covering how to find the specific volume, enthalpy, and entropy of superheated steam at a given temperature and pressure using the thermodynamic tables. Simple example - no interpolation required.
Thermodynamics - Forms of Work
Просмотров 6975 лет назад
Common equations used in an introductory thermodynamics course to express the quantity of work performed inside of a control volume from (i) electrical resistance, (ii) shaft work, or (iii) spring work. Equations are sometimes required for a first-law analysis of a control volume.
Thermodynamics - Forms of Energy
Просмотров 3,4 тыс.5 лет назад
Forms of energy typically encountered in a mechanical engineering thermodynamics course. Absolute and specific (per unit mass) forms of energy. Internal energy, mechanical energy, enthalpy, heat, and work are discussed in the context of the first law of thermodynamics, which tells us energy can be neither created nor destroyed.
Fluid Mechanics Example - Bernoulli's Equation
Просмотров 4,3 тыс.5 лет назад
Example Fluid Mechanics problem using Bernoulli's equation to analyze flow of air through a duct of changing diameter. A detailed walk-through of Bernoulli's equation is provided. How to use the result to analyze height of fluid in a manometer due to the pressure change.
Physics Example - Kinetic and Potential Energy
Просмотров 5725 лет назад
Example Physics problem which may be seen in an introductory, University-level Physics course. Full tutorial on how to solve for kinetic and potential energy of a mass sliding down a frictionless ramp. Conservation of energy. A 5 kg block is released from rest at the top of a frictionless 20° ramp, as shown. Determine the velocity of the block when it reaches the bottom of the ramp.
Numerical Analysis MATLAB Example - Backward Euler Method
Просмотров 29 тыс.5 лет назад
How to use the Backward Euler method in MATLAB to approximate solutions to first order, ordinary differential equations. Demonstrates necessary MATLAB functions and coding practices for applying the Backward Euler method to real differential equations. fzero and optimset functions are demonstrated. For loops are used. Results are plotted against Forward Euler method, and dependence of solution ...
Numerical Analysis - Stability Conditions
Просмотров 19 тыс.5 лет назад
Stability conditions for the Forward Euler, Backward Euler, and Trapezoidal methods for solving first order ordinary differential equations. Derivations presented for simple case of y' = lambda*y. Stability conditions give insight to appropriate time-steps for stable solutions.
Numerical Analysis - Trapezoidal Method
Просмотров 16 тыс.5 лет назад
Presentation of the implicit trapezoidal method for approximating the solution of first order, ordinary differential equations (ODEs). Example is given showing the derivation of an explicit scheme in the case of a linear ODE. Comparison with the Forward Euler and Backward Euler methods is given. The trapezoidal method is second order accurate, improving upon the numerical approximation generate...
Thermodynamics Example - Manometer Problem
Просмотров 7 тыс.5 лет назад
Example manometer problem which may be seen in a mechanical engineering thermodynamics course. Full tutorial on how to solve for gauge and absolute pressure of a system connected to a manometer. Which dimensions matter, and which can be neglected.
Numerical Analysis - Backward Euler Method
Просмотров 55 тыс.5 лет назад
Simple derivation of the Backward Euler method for numerically approximating the solution of a first-order ordinary differential equation (ODE). Builds upon knowledge presented in lesson on the Forward Euler method. Comparison between the Forward Euler and Backward Euler methods is presented, as it pertains to solving first order ordinary differential equations.
Plotting a Function - MATLAB Basics
Просмотров 2195 лет назад
How to plot a simple function in MATLAB using functions handles, or by defining an array of values. Foundational engineering tutorial.
Introduction to MATLAB - MATLAB Basics
Просмотров 1905 лет назад
Basic tutorial and introduction to MATLAB, including how to use the command window, workspace, help function, and how to start a script. Basic commands are explored. Foundational knowledge for any engineering student. More advanced MATLAB topics will be explored in subsequent videos.
Thermodynamics Example Problems - Units and Specific Volume
Просмотров 2,6 тыс.6 лет назад
Example thermodynamics problems dealing with unit conversions and finding specific volume from density. Converting between psi, kPa, and bar. How to track units through solving a problem. Tutorial for mechanical engineering thermodynamics. Want to go back through the basics? ruclips.net/video/eyUDcZSMF7U/видео.html
Thermodynamics - Definitions: Systems and Processes
Просмотров 4626 лет назад
Thermodynamics - Definitions: Systems and Processes
Numerical Analysis MATLAB Example - Forward Euler Method
Просмотров 12 тыс.6 лет назад
Numerical Analysis MATLAB Example - Forward Euler Method
Numerical Analysis - Forward Euler Method
Просмотров 35 тыс.6 лет назад
Numerical Analysis - Forward Euler Method
Thermodynamics - Units, Density, and Specific Volume
Просмотров 12 тыс.6 лет назад
Thermodynamics - Units, Density, and Specific Volume
Hello can you continue uploading videos, your videos are very helpful to me
Can Anyone help me Why there is so many formula for trapezoid method?
There is many formula for trapezoid method Which one we used? I think there are more than 3 formula for trapezoid!!! I got stuck Can you help me?
so simple . thanks so much sir
Thank you very much for the clear explanation. Now I can do my tutorial sheet! May I ask what '0(deltat^2)' represents when describing the local error? Thanks!
please what if y'=cos y + sin t. what will be y(i+1)= ?
Thank You for making such clear and nice deductions on how this works, really GREAT for understadning. Thanks!
Great Video, Thank You!!
Great video
Well explained. Thank you
Glad it was helpful!
Thanks for your useful videos! Why does the trapezoidal method has error of (delta t)^3 not (delta t)^2 ?? I this method is the sum of f of backward and forward euler method, so I predicted that it will have error of (delta t)^2
I love you
Made easy.
awesome
Thank you for the video, it was very helpful.
really good video! whould be nice to cover stability of FE method, in order to determine appropriate time step when you dont have an analytical solution to compare to
Great video as always keep it up!
Appreciate it!
Great explanation THANKS ALOT!
If I'm updating position,y, based on a force of gravity, G m1 m2 G/ r^2, how do solve for y n+1? (Trying to put this in code for a gravity simulation)
thank you very much.
You are welcome!
shoulda done an example
Hi, I'm wondering if we're now solving a higher order differential equation, can we use this solution as well? Thank you.
Sir i have a question.
i have no idea what i did wrong but i keep getting this error Unable to perform assignment because the indices on the left side are not compatible with the size of the right side.
How do you choose stopping criterion if you use euler method in while loop?
You can do that by setting a maxiter.(Someone in our class asked the same thing and this was the professors answer)
with that voice you're making engineering harder
which text books ?
Fluid mechanics fundamentals and applications yunus Cengel chapter 5
Thank you, this made things clearer
Kindly create a video doing some worked examples 🙏
Love you Sir. You save my life and my exams as well. Hahaha
Happy to help
How can I prove consistency please ?
Please do Runga Kutta methods...
Very short yet very clear explanation. Thank you very much.
Glad it was helpful!
If i use python is there a certain formula to find an error O(delta_t^2) or can i just initialize delta_t and run it through a for loop?
what function is fzero in python?
Great video, please keep making the series.
Awesome video. Thank you.
Audio is terrible
So is delta "t" our step size?
Yeah
Thanks for the easy pace. Question: when going from P3 to PG, don't you have to SUBTRACT rho x g x h from P3? But the suggestion to ignore it is well taken. Thanks for the vid.
Pretty sure you're right. I could see a reason why the gauge pressure would be higher than the atmospheric pressure
Hi .can you help me .. I have exercise about stability and consistance I will give you my e_gmail to reply me please ... kaoutherrabhi2@gmail.com Thanks
Sir, please upload more video 🙏😪
Grt sir 🙏
Thank you!
You're welcome!
how to implement this for nth order system of ODE?
i dont understand what is this f(t,y), what is this? some unkown function f which takes t and y(t) as parameters? how do i know what this function will do with those parameters?
f(x,y) is just a function of two variables. For example, f(x,y)=x^(2)y+xy, where as what you might be use to is f(x), which is just a function of a single variable, f(x) = x^2. I think what might make sense is v = v(0) + at. So if lets say initial velocity is 0, f(a,t) = at just like f(x,y) = x^2 + y^2. Applications of maths are important to its understanding, hence solving problems are important.
thanks great video
Glad it was helpful!
I'm utilizing this for my summer research and was looking for a clear and concise explanation, very well done! Thank you so much!
You're very welcome!
Please solve any question using this method, through which we clearly understand.
Hello dear sir, can you make a video on *NSFD (Nonstandard finite difference method)* ?