Color schlieren photographic system

Michael W. Seitz; Donald M. Scott; Beric W. Skews

doi:10.1117/12.175674

Abstract

Color schlieren has come to mean, not only schlieren images in color, but images where the color can be quantitatively related to the directions of the density gradients in the flow field. A system essentially consisting of three conventional schlieren systems using knife-edge cutoffs, rotated 120 deg with respect to each other, where the light source for each system is in one of the three primary colors is described. It is shown that combinations of these colors (creating a unique color) on the schlieren image resulting from the angled cutoff configuration is a function of the direction of the density gradient only. A variety of relatively inexpensive methods of producing the primary color beams are tested and it is shown that a color beamsplitter using dichroic filters with three standard commercial xenon flash tubes is suitable to obtain good results for high-speed applications. For steady flow applications, a single incandescent lamp used in conjunction with color filters and a diffusing screen is shown to be adequate for qualitative results.

Citation Download Citation

Michael W. Seitz, Michael W. Seitz, Donald M. Scott, Donald M. Scott, Beric W. Skews, Beric W. Skews, } "Color schlieren photographic system," Optical Engineering 33(9), (1 September 1994). https://doi.org/10.1117/12.175674 . Submission:

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years