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Is the use of "for the first time" in the following sentence correct grammatically and conceptually? If it is not, kindly suggest ways to make it clearer.

The main goal of this study is to highlight the effect of the blade thickness on the entropy generation analysis of the Wells turbine for the first time.

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    Grammatically there are no problems. But conceptually, I think "highlight" (metaphoric give prominence to) doesn't pair well with "for the first time", because when you highlight something, this usually implies it was already known/visible before (you're just emphasising it). Since it's a study, it would be better to use a more "objective, neutral" term like show the effect... (or perhaps better, investigate). And for what it's worth, I wouldn't bother with for the first time - it sounds like you're "bragging" (and can you be sure no-one else has ever done this?).
    – FumbleFingers
    Aug 9 '17 at 15:52
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Your example is grammatically OK, but if you need to emphasize "for the first time", I would write:

The main goal of this study is, for the first time, to highlight the effect of the blade thickness on the entropy generation analysis of the Wells turbine.

This creates a better flow. [topic][the fact it is the first time][goal]

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