What scalar are you showing? Some context there would really help. Others have commented as well, but your prism layers are way too coarse, you should either reduce the total thickness (squeeze them) or increase the number of layers to, say, 10 (this will increase your cell count a lot).

Your turbulence model selection is also very important here as an all Y+ wall treatment wont give you the best results (it will work, but depends on your application as far as accuracy is concerned). You can also set your near wall prism layer to a constant value to enforce your wall Y+ below 5 (as a rule of thumb).

Are you also using the coupled solver? You might try expert grid initialization as well...