The improved DSMC calculation program for turbulent velocity distribution in a circular tube has finally been completed.

昨年の５月以来の新しい記述（円管内乱流速度分布の改良DSMC計算）がようやく完成しました．今年は，春から体調を崩し，また，左目が半分見えなくなって，いよいよお迎えが来たかと覚悟をしたのですが，なんとか生き延びることができました．円管内乱流速度分布のDSMC計算は，２年前の 2024年に第一報を記載したのですが不完全な部分が多く，かといって簡単に改良法も思いつかず，ずっと気になっていたのです．体調が回復すると同時に，いろいろなアイデアが出て来て，秋に入り，当初考えていたものより良いものが出来上がったと喜んでいます．8月には，北海道の積丹半島神威岬の先端に行って来ました．しかし，そこで強風に吹かれて心身を清めようという思惑が外れ，穏やかな良い天気に恵まれてガッカリ？してしまいました．冬の強風の時期にまた出かけねばなりません．

I have finally completed a new write-up—covering improved DSMC calculations for turbulent velocity profiles in a circular tube—marking my first new work since May of last year. My health had deteriorated starting in the spring, and I even lost vision in half of my left eye; I truly braced myself, thinking my time had finally come, but I managed to pull through. I had published an initial report on these DSMC calculations two years ago, but the work was incomplete; I couldn’t easily come up with a way to improve it, and the issue had been weighing on my mind ever since. As my health recovered, various ideas began to surface, and by autumn, I was delighted to produce something far better than what I had originally envisioned. In August, I visited the tip of Cape Kamui on the Shakotan Peninsula in Hokkaido. I had hoped to purify my body and soul by braving the strong winds there, but I was blessed with calm, pleasant weather instead—leaving me feeling somewhat disappointed? It seems I shall have to make the trip again during the season of strong winter winds.