You are Here: Home >< Maths

Dimensional Analysis

Announcements Posted on
Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. Good morning all. I have a question that I am really struggling with and I was wondering if anybody on here would be able to help? Please see the question below:

Question: use dimensional analysis toestimate the time of an ideal liquid outflow from the cylindrical tank with crosssection of A1 and high of h. In the bottom of the tank is a small hole withcross section of A2. In order to find solution you have to assume that:
The fluid velocity does notdepend on the diameter of the hole.
The time of outflow is inverselyproportional to the cross section of the hole.
The time of outflow is directlyproportional to the cylinder cross section.

I am struggling to attach my attempt. I will continue to try but any help would be greatly appreciated!!!

I'm doing dimensional analysis at the moment, but I want to see your work first before I try and help just in case we are learning different methods!
3. Thanks for the reply! The method does not matter and I am keen to learn a new way if it makes it easier. I'm pretty sure my answer is incorrect.

Please find the link to my first page below. I will try and upload my second page now. ☺
4. Thank you for the tip on how to get the images of my workings uploaded. Apologies for the orientation.

I fear that my solution doesn't answer the question. Can somebody provide me with a solution to the question at the top of the thread?
5. Right I've had a look, and I haven't done Inspen's rules, I've only done the pi theorem. So I don't think I can help.

Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: May 9, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

Poll
Useful resources

Maths Forum posting guidelines

Not sure where to post? Read here first

How to use LaTex

Writing equations the easy way

Study habits of A* students

Top tips from students who have already aced their exams

Chat with other maths applicants