TY - GEN AU - Shanthini, R. TI - Degenerating orr-sommerfeld eigenmodes and development of three dimensional perturbations PY - 1990///] CY - [Lulea] PB - [Lulea University of Technology] KW - FLUID MACHANICS KW - PERTURBATION TECHNIQUES KW - DEGENERACY KW - ORR-SUMMERFIELD EQUATION N1 - TH148 ; ISSN 0348-8373 Thesis submitted to University of Technology, Lulea for the degree of PhD UR - http://dl.lib.mrt.ac.lk/handle/123/803 ER -