“…Second, in every higher-moment equation, only one additional unclosed function appears. Besides, a general symmetry analysis of the TPC equations has resulted in additional symmetries compared with only those that are implied by Navier-Stokes equations (Oberlack & Rosteck 2010, 2011Avsarkisov et al 2014). These symmetries, which are denoted statistical symmetries, have been shown to play a key role in the understanding of the scaling laws in turbulent flows, especially for higher moments of the velocity.…”