Error message

  • Warning: Undefined array key "research_center" in drupal_theme_initialize() (line 100 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Attempt to read property "filename" on null in _drupal_theme_initialize() (line 146 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Deprecated function: dirname(): Passing null to parameter #1 ($path) of type string is deprecated in _drupal_theme_initialize() (line 146 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Undefined array key "research_center" in theme_get_setting() (line 1440 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Attempt to read property "filename" on null in theme_get_setting() (line 1477 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Deprecated function: dirname(): Passing null to parameter #1 ($path) of type string is deprecated in theme_get_setting() (line 1477 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Undefined array key "research_center" in drupal_theme_initialize() (line 100 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Attempt to read property "filename" on null in _drupal_theme_initialize() (line 146 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Deprecated function: dirname(): Passing null to parameter #1 ($path) of type string is deprecated in _drupal_theme_initialize() (line 146 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Undefined array key "research_center" in theme_get_setting() (line 1440 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Attempt to read property "filename" on null in theme_get_setting() (line 1477 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Deprecated function: dirname(): Passing null to parameter #1 ($path) of type string is deprecated in theme_get_setting() (line 1477 of /home/cnls/http/drupal-7.98/includes/theme.inc).
  • Warning: Attempt to read property "name" on null in _theme_load_registry() (line 335 of /home/cnls/http/drupal-7.98/includes/theme.inc).

Jet Engine Research

In recent years a lot of attention has been devoted to the study of air flow through turbomachines.  The main reason for this interest is that when a turbomachine, such as a jet engine, operates close to its optimal operating parameter values, the flow can become unstable.  These instabilities put a large stress on the engine and in some cases the engine needs to be turned off in order to recover original operation.  For this reason jet engines are currently operated away from their optimal operating parameter values increasing both fuel consumption and the engine weight.

The goal of this research is to develop jet engine that are so efficient, light and save that they can be put on the family car.

For more details see:

http://www.math.ucsb.edu/~birnir/research/outline.html

Thumbnail: 
People: 
Bjorn Birnir