// BLOG

Pinned

July 24, 2026 by Aaron Lentner 28 min

High-Fidelity Thermal-Hydraulics: DNS as a Numerical Laboratory for Nuclear Safety

A tour of my doctoral research — from clean-sheet Fortran refactoring to direct numerical simulation of molten reactor core convection, a cautionary tale about non-uniform FFT Poisson solvers, and a mechanistic closure for nucleate boiling. Written for engineers, physicists, and anyone who thinks Fortran deserves more respect.

nuclear-engineering fortran hpc cfd dns research

February 08, 2026 by Aaron Lentner 2 min

KaTeX Math Rendering Test

A test post demonstrating inline and display LaTeX math rendering via KaTeX, using sample equations from thermal-hydraulics research.

test math nuclear-engineering

November 01, 2025 by Geoffrey Lentner 9 min

HyperShell v2.8: Resource-Aware Scheduling, Task Groups, and Application-Layer Encryption

HyperShell v2.8.0 brings resource-aware task scheduling with priority-based backfilling, real-time resource monitoring, queue-only submission, rate limiting, task groups for dependency management, and application-layer encryption for defense-in-depth security.

hypershell hpc python parallel-computing security release