107 



should not be much affected by freestream turbu- 

 lence or polymer solutions. This appears to be 

 the case if the test medium has "many" freestream 

 nuclei so that travelling bubble cavitation is 

 predominant. However, if only a few nuclei are 

 present, attached forms of cavitation occur at 

 inception even on nonseparating bodies. From 

 recent nuclei measurements in the ocean it appears 

 that some test facilities may have too many nuclei 

 and others possibly too few. 



ACKNOWLEDGMENTS 



This work was supported by the Department of the 

 Navy, Office of Naval Research under Contract 

 N00014-76-C-0156 (in part) and by the Naval Sea 

 Systems Command, General Hydromechanics Research 

 Program, administered by the David W. Taylor Naval 

 Ship Research and Development Center under Contract 

 N00014-75-C-0378. This assistance is gratefully 

 acknowledged. Special thanks are due to Mrs. 

 Barbara Hawk for manuscript preparation and to 

 Joseph Katz and David Faulkner for their painstaking 

 efforts in hologram analysis. Finally we thank 

 Professor M. Morkovin for his careful and helpful 

 review of the manuscript. 



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