As an undergraduate he had already met Pelageia Polubarinova and the two found that they had much in common for Kochin 's research was on meteorology, gas dynamics and shock waves in compressible fluids. Kochin was appointed to Leningrad State University in 1924.
Bilang isang undergraduate niya na matugunan Pelageia Polubarinova at ang dalawang natagpuan na sila ay marami sa karaniwan para sa Kochin 's pananaliksik ay sa meteorolohiya, gas dinamika at shock waves sa napipiga fluids. Kochin ay hihirangin upang angkinin Leningrad State University sa 1924.