Yes, after the whirlwind arrives, Elihu is not heard from or mentioned again. Some people assume Elihu is still there, but where is the evidence for that view?
What I have found very interesting are other places where a whirlwind is mentioned in Scripture. The KJV specifically uses the term "whirlwind", so that's where the references below are from. Perhaps these verses can provide a clue us as to the whereabouts of Elihu:
1. Proverbs 10:25 “As the whirlwind passeth, so is the wicked no more: but the righteous is an everlasting foundation.”
2. Jeremiah 23:19 “Behold, a whirlwind of the LORD is gone forth in fury, even a grievous whirlwind: it shall fall grievously upon the head of the wicked.”
3. Jeremiah 30:23 “Behold, the whirlwind of the LORD goeth forth with fury, a continuing whirlwind: it shall fall with pain upon the head of the wicked.”
4. Hosea 8:7 “For they have sown the wind, and they shall reap the whirlwind: it hath no stalk: the bud shall yield no meal: if so be it yield, the strangers shall swallow it up.”
5. Isaiah 40:24 “Yea, they shall not be planted; yea, they shall not be sown: yea, their stock shall not take root in the earth: and he shall also blow upon them, and they shall wither, and the whirlwind shall take them away as stubble.”
6. Proverbs 1:26,27 “I also will laugh at your calamity; I will mock when your fear cometh; When your fear cometh as desolation, and your destruction cometh as a whirlwind; when distress and anguish cometh upon you.
7. Nahum 1:2,3 “God is jealous, and the LORD revengeth; the LORD revengeth, and is furious; the LORD will take vengeance on his adversaries, and he reserveth wrath for his enemies. The LORD is slow to anger, and great in power, and will not at all acquit the wicked: the LORD hath his way in the whirlwind and in the storm, and the clouds are the dust of his feet.”
So if Job and his friends were wicked, it seems the whirlwind would have destroyed them. But as we know, Job and his friends are present when God appears in the whirlwind. What is quite curious, however, is that Elihu is never heard from or mentioned again after God appears in the whirlwind. Hmm...