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There is a growing body of evidence that the plasma loops seen with currentinstrumentation (SOHO, TRACE and Hinode) may consist of many sub-resolutionelements or strands. Thus, the overall plasma evolution we observe in thesefeatures could be the cumulative result of numerous individual strandsundergoing sporadic heating. This paper presents a short (10^9 cm ~ 10 Mm)``global loop'' as 125 individual strands where each strand is modelledindependently by a one-dimensional hydrodynamic simulation. The energy releasemechanism across the strands consists of localised, discrete heating events(nano-flares). The strands are ``coupled'' together through the frequencydistribution of the total energy input to the loop which follows a power lawdistribution with index alpha. The location and lifetime of each energy eventoccurring is random. Although a typical strand can go through a series ofwell-defined heating/cooling cycles, when the strands are combined, the overallquasi-static emission measure weighted thermal profile for the global loopreproduces a hot apex/cool base structure. Localised cool plasma blobs are seento travel along individual strands which could cause the loop to `disappear'from coronal emission and appear in transition or chromospheric ones. As alphaincreases (from 0 to 2.29 to 3.29), more weight is given to the smallestheating episodes. Consequently, the overall global loop apex temperatureincreases while the variation of the temperature around that value decreases.Any further increase in alpha saturates the loop apex temperature variations atthe current simulation resolution. The effect of increasing the number ofstrands and the loop length as well as the implications of these results uponpossible future observing campaigns for TRACE and Hinode are discussed.

Hydrodynamic Simulation of a nano-flare heated multi-strand solar atmospheric loop