lab5.docx - DEPARTMENT OF MECHANICAL AND INDUSTRIAL ENGINEERING Drag Coefficient of Spheres A Lab Report submitted in partial fulfillment of the

lab5.docx - DEPARTMENT OF MECHANICAL AND INDUSTRIAL...

This preview shows page 1 - 4 out of 9 pages.

Drag Coefficient of Spheres A Lab Report submitted in partial fulfillment of the requirements of Mech 361: Fluids 2 Section XS Concordia University Course Instructor: Dr. Nabil Esmail Laboratory Instructor: Ali Reza Mehrabian D EPARTMENT OF M ECHANICAL AND INDUSTRIAL ENGINEERING
Image of page 1
Abstract This laboratory report examines the results obtained from an experiment involving the study of drag coefficients of rigid spheres in various viscous fluids. The results are to compiled and compared against theoretical values as well as being used to calculate several qualities of flow around the spherical objects including buoyancy force, drag force and terminal velocities. I. Introduction Drag forces acting on a body can be reduced into two categories, pressure and friction. Depending on the geometry of the body one of the drag forces may be significantly lowered compared to the other. In the case of this laboratory report we are dealing with spheres thus the drag force due to pressure is extremely high compared to that of friction. An empirical formula is given by the lab manual; This laboratory explores the effects that gravity has on each sphere when the balls are dropped into the viscous fluids. A force that acts directly against the force of gravity is that of buoyancy which can be calculated using the following formulas; Similarly the drag force can be calculated using the following formula; All forces acting on the spheres can be balanced according to the following equation; We can also calculate a dimensionless variable known as the drag coefficient at steady state which can be calculated from the following equation; 1
Image of page 2
II. Experimental Setup and Procedure Setup The setup for the experiment consisted of 3 Plexiglas tubes which contained water, Shell 10W and Shell Tellus oil respectively. The distance between the timed regions of the tubes was 2
Image of page 3
Image of page 4

You've reached the end of your free preview.

Want to read all 9 pages?

  • Fall '15
  • nabil esmail

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors