The time duration for functioning of corpus luteum after ovulation in a nonpregnant female is:

Following ovulation, the corpus luteum develops from the remains of the dominant or Graafian follicle in a process referred to as luteinization. The human corpus luteum is a transient endocrine organ that, in the absence of pregnancy, will rapidly regress 9 to 11 days after ovulation. Luteolysis results from decreased levels of circulating LH in the late luteal phase and decreased LH sensitivity of luteal cells. Luteolysis is characterized by a loss of luteal cells by apoptotic cell death. Ref: Cunningham F.G., Leveno K.J., Bloom S.L., Hauth J.C., Rouse D.J., Spong C.Y. (2010). Chapter 3. Implantation, Embryogenesis, and Placental Development. In F.G. Cunningham, K.J. Leveno, S.L. Bloom, J.C. Hauth, D.J. Rouse, C.Y. Spong (Eds), Williams Obstetrics, 23e.